f(x)=-2(x-7)(x+3)

Simple and best practice solution for f(x)=-2(x-7)(x+3) 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(x)=-2(x-7)(x+3) equation: 


Simplifying
f(x) = -2(x + -7)(x + 3)

Multiply f * x
fx = -2(x + -7)(x + 3)

Reorder the terms:
fx = -2(-7 + x)(x + 3)

Reorder the terms:
fx = -2(-7 + x)(3 + x)

Multiply (-7 + x) * (3 + x)
fx = -2(-7(3 + x) + x(3 + x))
fx = -2((3 * -7 + x * -7) + x(3 + x))
fx = -2((-21 + -7x) + x(3 + x))
fx = -2(-21 + -7x + (3 * x + x * x))
fx = -2(-21 + -7x + (3x + x2))

Combine like terms: -7x + 3x = -4x
fx = -2(-21 + -4x + x2)
fx = (-21 * -2 + -4x * -2 + x2 * -2)
fx = (42 + 8x + -2x2)

Solving
fx = 42 + 8x + -2x2

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 42x-1 + 8 + -2x

Simplifying
f = 42x-1 + 8 + -2x

Reorder the terms:
f = 8 + 42x-1 + -2x

See similar equations:

| 5x-2y=6y-4 | | 1/4n=20 | | 3x+2=5x-2y | | 8-x=3x+2 | | 4/5*x=28 | | 3x+2=6y-4 | | x-x(.20)=500 | | 8x^3-y^3-3y^2-5y+4x+3=0 | | 3x=13/10 | | (X)2-100=0 | | 6=-36 | | x-x(.15)=500 | | 5y-1=5y+1 | | 119+-24= | | 1+2(x+3)+6x=6 | | .375=.333+3 | | x/.12=.5/.3 | | 3(5w+5)+3w=7(w+8)-30 | | 12(3)-12(2)/3(2) | | 15/90= | | 7(x+1)-(2x-9)=3 | | 19+-4= | | 6(z+2)=4(z+1)-10 | | 19*37+5+-4+37=95 | | (3-x)+2(x-1)=(x-5)+2x | | -5f+4=64 | | 19x+5+-4= | | 0+2=8 | | .5x+7=1.2x-14 | | 19*37+5+-4+37= | | 0.26x+0.09x=8-0.45x | | 19+5+-4= |

Equations solver categories