f(5x)=4x^2+3x-4

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Solution for f(5x)=4x^2+3x-4 equation:


Simplifying
f(5x) = 4x2 + 3x + -4

Remove parenthesis around (5x)
f * 5x = 4x2 + 3x + -4

Reorder the terms for easier multiplication:
5f * x = 4x2 + 3x + -4

Multiply f * x
5fx = 4x2 + 3x + -4

Reorder the terms:
5fx = -4 + 3x + 4x2

Solving
5fx = -4 + 3x + 4x2

Solving for variable 'f'.

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

Divide each side by '5x'.
f = -0.8x-1 + 0.6 + 0.8x

Simplifying
f = -0.8x-1 + 0.6 + 0.8x

Reorder the terms:
f = 0.6 + -0.8x-1 + 0.8x

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