f(x)=-4(x-7)(x-3)

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Solution for f(x)=-4(x-7)(x-3) equation:


Simplifying
f(x) = -4(x + -7)(x + -3)

Multiply f * x
fx = -4(x + -7)(x + -3)

Reorder the terms:
fx = -4(-7 + x)(x + -3)

Reorder the terms:
fx = -4(-7 + x)(-3 + x)

Multiply (-7 + x) * (-3 + x)
fx = -4(-7(-3 + x) + x(-3 + x))
fx = -4((-3 * -7 + x * -7) + x(-3 + x))
fx = -4((21 + -7x) + x(-3 + x))
fx = -4(21 + -7x + (-3 * x + x * x))
fx = -4(21 + -7x + (-3x + x2))

Combine like terms: -7x + -3x = -10x
fx = -4(21 + -10x + x2)
fx = (21 * -4 + -10x * -4 + x2 * -4)
fx = (-84 + 40x + -4x2)

Solving
fx = -84 + 40x + -4x2

Solving for variable 'f'.

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

Divide each side by 'x'.
f = -84x-1 + 40 + -4x

Simplifying
f = -84x-1 + 40 + -4x

Reorder the terms:
f = 40 + -84x-1 + -4x

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