f(-2)whenf(x)=x^2+x-2

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

Simplifying
f(-2) * whenf(x) = x2 + x + -2

Reorder the terms for easier multiplication:
-2f * efhnw * x = x2 + x + -2

Multiply f * efhnw
-2ef2hnw * x = x2 + x + -2

Multiply ef2hnw * x
-2ef2hnwx = x2 + x + -2

Reorder the terms:
-2ef2hnwx = -2 + x + x2

Solving
-2ef2hnwx = -2 + x + x2

Solving for variable 'e'.

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

Divide each side by '-2f2hnwx'.
e = f-2h-1n-1w-1x-1 + -0.5f-2h-1n-1w-1 + -0.5f-2h-1n-1w-1x

Simplifying
e = f-2h-1n-1w-1x-1 + -0.5f-2h-1n-1w-1 + -0.5f-2h-1n-1w-1x

Reorder the terms:
e = -0.5f-2h-1n-1w-1 + f-2h-1n-1w-1x-1 + -0.5f-2h-1n-1w-1x