f(x)=-9(2x-7)(x+1)

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Solution for f(x)=-9(2x-7)(x+1) equation: 


Simplifying
f(x) = -9(2x + -7)(x + 1)

Multiply f * x
fx = -9(2x + -7)(x + 1)

Reorder the terms:
fx = -9(-7 + 2x)(x + 1)

Reorder the terms:
fx = -9(-7 + 2x)(1 + x)

Multiply (-7 + 2x) * (1 + x)
fx = -9(-7(1 + x) + 2x * (1 + x))
fx = -9((1 * -7 + x * -7) + 2x * (1 + x))
fx = -9((-7 + -7x) + 2x * (1 + x))
fx = -9(-7 + -7x + (1 * 2x + x * 2x))
fx = -9(-7 + -7x + (2x + 2x2))

Combine like terms: -7x + 2x = -5x
fx = -9(-7 + -5x + 2x2)
fx = (-7 * -9 + -5x * -9 + 2x2 * -9)
fx = (63 + 45x + -18x2)

Solving
fx = 63 + 45x + -18x2

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 63x-1 + 45 + -18x

Simplifying
f = 63x-1 + 45 + -18x

Reorder the terms:
f = 45 + 63x-1 + -18x

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