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

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


Simplifying
f(-2) = x4 + 2x2 + -1

Reorder the terms for easier multiplication:
-2f = x4 + 2x2 + -1

Reorder the terms:
-2f = -1 + 2x2 + x4

Solving
-2f = -1 + 2x2 + x4

Solving for variable 'f'.

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

Divide each side by '-2'.
f = 0.5 + -1x2 + -0.5x4

Simplifying
f = 0.5 + -1x2 + -0.5x4

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