f(-5)=x^2+3x-21

Simple and best practice solution for f(-5)=x^2+3x-21 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(-5)=x^2+3x-21 equation: 


Simplifying
f(-5) = x2 + 3x + -21

Reorder the terms for easier multiplication:
-5f = x2 + 3x + -21

Reorder the terms:
-5f = -21 + 3x + x2

Solving
-5f = -21 + 3x + x2

Solving for variable 'f'.

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

Divide each side by '-5'.
f = 4.2 + -0.6x + -0.2x2

Simplifying
f = 4.2 + -0.6x + -0.2x2

See similar equations:

| 2x+20y=-126 | | 7m+7n-7p= | | 14m+5n-4m+10n= | | 7r+1=-2r+73 | | 5xsquared+30x=0 | | -2x+37=7+8x | | 6xA=49.2 | | x+y=230 | | 4.8=15.36g | | 70x+50y=9000 | | 16=6w+w^2 | | 9(y-6)=6y-48 | | 3.3+(2x-5)=6 | | (4-y)(4y+2)=0 | | (y+1)(3y^2+2y-4)= | | H=16t^2+20t+50 | | (2-u)(5u-3)=0 | | 4n+35n+-15=9n+-45 | | 2(2x+4)-(x-3)+3-5x=-3 | | 12+-5=-10 | | 1.4+2y=1.4 | | 12+(-5)=(-10) | | 4b-12-15b=9b+8 | | log(3x-1)=log(5-2x) | | z^2-12z=-19 | | 8x-5+6=3x+6 | | 2(4y-3)=14 | | 3x+14=-28+3x | | (10+x)(8+x)=120 | | 4(2x-1)=2+35 | | 6(-66+7y)-6y=-72 | | x+2(228-2x)=276 |

Equations solver categories