f(-2)=(-2)2-1

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Solution for f(-2)=(-2)2-1 equation: 


Simplifying
f(-2) = (-2) * 2 + -1

Reorder the terms for easier multiplication:
-2f = (-2) * 2 + -1

Multiply -2 * 2
-2f = -4 + -1

Combine like terms: -4 + -1 = -5
-2f = -5

Solving
-2f = -5

Solving for variable 'f'.

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

Divide each side by '-2'.
f = 2.5

Simplifying
f = 2.5

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