f(x)=-4x^2+9x+7

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Solution for f(x)=-4x^2+9x+7 equation: 


Simplifying
f(x) = -4x2 + 9x + 7

Multiply f * x
fx = -4x2 + 9x + 7

Reorder the terms:
fx = 7 + 9x + -4x2

Solving
fx = 7 + 9x + -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 = 7x-1 + 9 + -4x

Simplifying
f = 7x-1 + 9 + -4x

Reorder the terms:
f = 9 + 7x-1 + -4x

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