f(x)=2(X-6)(20-3X)

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Solution for f(x)=2(X-6)(20-3X) equation: 


Simplifying
f(x) = 2(X + -6)(20 + -3X)

Multiply f * x
fx = 2(X + -6)(20 + -3X)

Reorder the terms:
fx = 2(-6 + X)(20 + -3X)

Multiply (-6 + X) * (20 + -3X)
fx = 2(-6(20 + -3X) + X(20 + -3X))
fx = 2((20 * -6 + -3X * -6) + X(20 + -3X))
fx = 2((-120 + 18X) + X(20 + -3X))
fx = 2(-120 + 18X + (20 * X + -3X * X))
fx = 2(-120 + 18X + (20X + -3X2))

Combine like terms: 18X + 20X = 38X
fx = 2(-120 + 38X + -3X2)
fx = (-120 * 2 + 38X * 2 + -3X2 * 2)
fx = (-240 + 76X + -6X2)

Solving
fx = -240 + 76X + -6X2

Solving for variable 'f'.

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

Divide each side by 'x'.
f = -240x-1 + 76x-1X + -6x-1X2

Simplifying
f = -240x-1 + 76x-1X + -6x-1X2

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