f(-4)=x^2+4x-1

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Solution for f(-4)=x^2+4x-1 equation: 


Simplifying
f(-4) = x2 + 4x + -1

Reorder the terms for easier multiplication:
-4f = x2 + 4x + -1

Reorder the terms:
-4f = -1 + 4x + x2

Solving
-4f = -1 + 4x + x2

Solving for variable 'f'.

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

Divide each side by '-4'.
f = 0.25 + -1x + -0.25x2

Simplifying
f = 0.25 + -1x + -0.25x2

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