f(-2)=x*x-9x

Simple and best practice solution for f(-2)=x*x-9x equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for f(-2)=x*x-9x equation: 


Simplifying
f(-2) = x * x + -9x

Reorder the terms for easier multiplication:
-2f = x * x + -9x

Multiply x * x
-2f = x2 + -9x

Reorder the terms:
-2f = -9x + x2

Solving
-2f = -9x + x2

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Divide each side by '-2'.
f = 4.5x + -0.5x2

Simplifying
f = 4.5x + -0.5x2

See similar equations:

| 2a^2=90 | | (5x-16)/8=(9x-9)/10 | | 9y+7x-11y-4x= | | 1.6x-.7(x-9)=.9(x-7) | | 2a/a=3/4 | | -2.6+x=8.3 | | (m/m-9)-10=(9/m-9) | | 2x=(3x-3)(m+6) | | X+1.75=6.25 | | 0.4p+2=.1(p+5)+.3(p+1) | | -3[7+6x]-10=-31 | | -6(2y-4x)= | | -2(6y+2)+3(4y-5)= | | -1+7[2-6b]=55 | | K^2=-5x-4 | | y=mx-d | | 3x^2-6x-44=0 | | 9[-9+6n]-8=-8 | | 8+9[9r+6]=62 | | (x^2+4x-55)=0 | | (a-k/g)=r+x | | q/2+4/5=(5q+8)/10 | | 3y=-4x+7 | | 0.7x+2(x-3)+0.2+3= | | 6-6v+2=-11 | | 9x^2+12x+16=0 | | 8+9(9r+6)=62 | | 2x-4x-8=-2x+3-8 | | 6y+2(2y+3)= | | 6x^2-7x+2=33 | | 6(x+2)-4=3x+3(3+x) | | 7x-3=4(x+1)+3x-7 |

Equations solver categories