f(x)=(0.7x+6)(0.4x-8)

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Solution for f(x)=(0.7x+6)(0.4x-8) equation: 


Simplifying
f(x) = (0.7x + 6)(0.4x + -8)

Multiply f * x
fx = (0.7x + 6)(0.4x + -8)

Reorder the terms:
fx = (6 + 0.7x)(0.4x + -8)

Reorder the terms:
fx = (6 + 0.7x)(-8 + 0.4x)

Multiply (6 + 0.7x) * (-8 + 0.4x)
fx = (6(-8 + 0.4x) + 0.7x * (-8 + 0.4x))
fx = ((-8 * 6 + 0.4x * 6) + 0.7x * (-8 + 0.4x))
fx = ((-48 + 2.4x) + 0.7x * (-8 + 0.4x))
fx = (-48 + 2.4x + (-8 * 0.7x + 0.4x * 0.7x))
fx = (-48 + 2.4x + (-5.6x + 0.28x2))

Combine like terms: 2.4x + -5.6x = -3.2x
fx = (-48 + -3.2x + 0.28x2)

Solving
fx = -48 + -3.2x + 0.28x2

Solving for variable 'f'.

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

Divide each side by 'x'.
f = -48x-1 + -3.2 + 0.28x

Simplifying
f = -48x-1 + -3.2 + 0.28x

Reorder the terms:
f = -3.2 + -48x-1 + 0.28x

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