(x + 4)*2 + 4(x*2 + 2) > (x - 2)*2 + 4x(x + 2)
Post the whole process.
x^2 +8x+16+4x^2+8 > x^2-4x+4+4x^2+8
= 5x^2+8x+24 > 5x^2+12
= 8x > -12
= x > -12/8
may have made mistake cause writing in comp aint mah thing.
jura ples
Quote from: antisickness on February 08, 2012, 04:56:08 PM
x^2 +8x+16+4x^2+8 > x^2-4x+4+4x^2+8
= 5x^2+8x+24 > 5x^2+12
= 8x > -12
= x > -12/8
may have made mistake cause writing in comp aint mah thing.
jura ples
The final result its -3/2
2x+8+8x+8 > 2x-4+4x (to the power of 2 lol) + 8x
10x+16 > 10x +4x (to the power of 2) -4
16-4 > 10x-10x + 4x (to the power of 2)
12 > 4x (to the power of 2)
3> x squared
Square root 3 > x
sowwy if i did anything wrong(http://i43.tinypic.com/3506l2r.jpg)
mayb i did something wrong along the way... cba getting my pen and paper out tho rofl
Quote from: Dewo on February 08, 2012, 04:50:56 PM
(x + 4)*2 + 4(x*2 + 2) > (x - 2)*2 + 4x(x + 2)
Post the whole process.
(x + 4)*2 + 4(x*2 + 2) > (x - 2)*2 + 4x(x + 2)
x*2 + 8x + 16 + 4x*2 + 8 > x*2 - 4x +4 + 4x*2 + 8x
5x*2 + 8x + 24 > 5x*2 + 4x + 4
8x + 24 > 4x + 4
4x > -20
x > -5P.S. : If there is something that we really do in the romanian schools...i can asure you thats math.
Quote from: 5thnbg on February 08, 2012, 05:58:28 PM
Quote from: Dewo on February 08, 2012, 04:50:56 PM
(x + 4)*2 + 4(x*2 + 2) > (x - 2)*2 + 4x(x + 2)
Post the whole process.
(x + 4)*2 + 4(x*2 + 2) > (x - 2)*2 + 4x(x + 2)
x*2 + 8x + 16 + 4x*2 + 8 > x*2 - 4x +4 + 4x*2 + 8x
5x*2 + 8x + 24 > 5x*2 + 4x + 4
8x + 24 > 4x + 4
4x > -20
x > -5
P.S. : If there is something that we really do in the romanian schools...i can asure you thats math.
I hope, you are right.
Thanks to those who used some of their time to help me. I appreciate it.
Quote from: Dewo on February 08, 2012, 06:12:22 PM
Quote from: 5thnbg on February 08, 2012, 05:58:28 PM
Quote from: Dewo on February 08, 2012, 04:50:56 PM
(x + 4)*2 + 4(x*2 + 2) > (x - 2)*2 + 4x(x + 2)
Post the whole process.
(x + 4)*2 + 4(x*2 + 2) > (x - 2)*2 + 4x(x + 2)
x*2 + 8x + 16 + 4x*2 + 8 > x*2 - 4x +4 + 4x*2 + 8x
5x*2 + 8x + 24 > 5x*2 + 4x + 4
8x + 24 > 4x + 4
4x > -20
x > -5
P.S. : If there is something that we really do in the romanian schools...i can asure you thats math.
I hope, you are right.
Thanks to those who used some of their time to help me. I appreciate it.
Do the verification.. For example change x with -5 and then with -4...
Do i get jura or smthing?
**** uguys for helping dewo for free and not me for a jura+love
8====>heads
this is way easier :p
i dunno buddy ??? ??? ??? ???
(x + 4)*2 + 4(x*2 + 2) > (x - 2)*2 + 4x(x + 2)
(x+4)(x+4) + 4x^2 + 8 > (x - 2) (x-2) +4x^2 + 8x <---- Do not forget the middle terms. (x + 4)*2 is not x^2 + 4^2.
x^2 + 4x + 4x + 16 + 4x^2 + 8 > x^2 - 2x - 2x + 4 + 4x^2 +8x
5x^2 + 8x + 24 > 5x^2 + 4x + 4
4x > -20
x > -5
or:
20 > -4x
-20 < 4x
-5 < x
^ Note the change in > to < for future.
wolframalpha.com
Quote from: Jeffalo13 on February 08, 2012, 10:08:05 PM
wolframalpha.com
Ooo. Also there is this:
http://www.mathway.com (http://www.mathway.com)
http://www.mathway.com/answer.aspx?p=calg?p=%28xSMB15+SMB154%29SMB072SMB15+SMB154%28xSMB072SMB15+SMB152%29SMB15SMB03SMB15%28xSMB15-SMB152%29SMB072SMB15+SMB154x%28xSMB15+SMB152%29?p=3?p=?p=?p=?p=?p=0?p=?p=0?p=?p= (http://www.mathway.com/answer.aspx?p=calg?p=%28xSMB15+SMB154%29SMB072SMB15+SMB154%28xSMB072SMB15+SMB152%29SMB15SMB03SMB15%28xSMB15-SMB152%29SMB072SMB15+SMB154x%28xSMB15+SMB152%29?p=3?p=?p=?p=?p=?p=0?p=?p=0?p=?p=)
you guys could've gave me those links before i failed math
Quote from: Pokeh on February 08, 2012, 10:45:46 PM
you guys could've gave me those links before i failed math
=/ Ross got 97.7% in math 12 without it.
.-.(f).-.
Quote from: Rossbach on February 08, 2012, 10:48:04 PM
Quote from: Pokeh on February 08, 2012, 10:45:46 PM
you guys could've gave me those links before i failed math
=/ Ross got 97.7% in math 12 without it.
.-.(f).-.
i'll need your msn for this summer and next year calculus class
Quote from: Pokeh on February 08, 2012, 10:51:47 PM
Quote from: Rossbach on February 08, 2012, 10:48:04 PM
Quote from: Pokeh on February 08, 2012, 10:45:46 PM
you guys could've gave me those links before i failed math
=/ Ross got 97.7% in math 12 without it.
.-.(f).-.
i'll need your msn for this summer and next year calculus class
Ross will PM it to you, and try to help as much as he can.
yes also pls help pig when he gets to ap stat and pre cal
:-*
Quote from: KillerPig on February 08, 2012, 11:28:02 PM
yes also pls help pig when he gets to ap stat and pre cal
:-*
pre calc is lieeeeek a review of every single class up to there.
It hardly teaches calculus or even the basics of it.
Quote from: Allie on February 08, 2012, 11:45:31 PM
Quote from: KillerPig on February 08, 2012, 11:28:02 PM
yes also pls help pig when he gets to ap stat and pre cal
:-*
pre calc is lieeeeek a review of every single class up to there.
It hardly teaches calculus or even the basics of it.
differs from education system to education system and if you live in america/canada/etc.
For us it's an introduction to calculus; and completely different from the shit I've been Acing for my life in school up until this year >_>
ive been told ap stat was a blowoff. but i sukkk at math so we'll see eh?
Quote from: mo9 on February 08, 2012, 05:12:30 PM
2x+8+8x+8 > 2x-4+4x (to the power of 2 lol) + 8x
10x+16 > 10x +4x (to the power of 2) -4
16-4 > 10x-10x + 4x (to the power of 2)
12 > 4x (to the power of 2)
3> x squared
Square root 3 > x
sowwy if i did anything wrong
(http://i43.tinypic.com/3506l2r.jpg)
i liek da way how you write x
i only do that in math so i don't get mixed up between x and the multiplication sing =3
Quote from: RedNeon on February 09, 2012, 07:37:43 AMi liek da way how you write x
...How do you write it in math? o_O
Quote from: RedNeon on February 09, 2012, 07:37:43 AM
Quote from: mo9 on February 08, 2012, 05:12:30 PM
2x+8+8x+8 > 2x-4+4x (to the power of 2 lol) + 8x
10x+16 > 10x +4x (to the power of 2) -4
16-4 > 10x-10x + 4x (to the power of 2)
12 > 4x (to the power of 2)
3> x squared
+ or - the Square root 3 > x
sowwy if i did anything wrong
(http://i43.tinypic.com/3506l2r.jpg)
i liek da way how you write x
Quote from: iwasbobo on February 09, 2012, 07:51:26 PM
Quote from: RedNeon on February 09, 2012, 07:37:43 AMi liek da way how you write x
...How do you write it in math? o_O
two strraight intersecting diagonals , not two c's liek mo did ::)