Question

3x2 -5x +7 - 5x2 - 11+ 8x+ 20+ 9x2 - 6x simplify this​

Answer 1

Answer :

3x^2 - 5x + 7 - 5x^2 - 11 +8x +20 + 9x^2 -6x

-2x^2 - 3x + 4

we know that $-b\sqrt{-b+-2ac /2a}$

$x =-3\sqrt{-3^2 - 2 * (-2)*4/2*-2\\}$

x = -3 +- 5 /-4

x = -3+5/-4

x = -1/2

x = -3-5/-4

x = -8/-4

x = 2

Hope this will help uh

Answer 2

Answer:

1. 3x2=6. So,

-5x +7-5x2-11+8x+20+9x2-6x.

We should separate the x thingy aside.

-5x+(-8x)+(-6x)

=-5x-8x-6x,so

=40x-6x

=-240x

x=+240

6+7-5x2-11+20+9x2

=13-10-19+18

13-10-1

=3-1=2