f(-2)givenf(x)=3x^2+5x+12

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Solution for f(-2)givenf(x)=3x^2+5x+12 equation: 


Simplifying
f(-2) * givenf(x) = 3x2 + 5x + 12

Reorder the terms for easier multiplication:
-2f * efginv * x = 3x2 + 5x + 12

Multiply f * efginv
-2ef2ginv * x = 3x2 + 5x + 12

Multiply ef2ginv * x
-2ef2ginvx = 3x2 + 5x + 12

Reorder the terms:
-2ef2ginvx = 12 + 5x + 3x2

Solving
-2ef2ginvx = 12 + 5x + 3x2

Solving for variable 'e'.

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

Divide each side by '-2f2ginvx'.
e = -6f-2g-1i-1n-1v-1x-1 + -2.5f-2g-1i-1n-1v-1 + -1.5f-2g-1i-1n-1v-1x

Simplifying
e = -6f-2g-1i-1n-1v-1x-1 + -2.5f-2g-1i-1n-1v-1 + -1.5f-2g-1i-1n-1v-1x

Reorder the terms:
e = -2.5f-2g-1i-1n-1v-1 + -6f-2g-1i-1n-1v-1x-1 + -1.5f-2g-1i-1n-1v-1x

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