F(-3)=2x^2+5-9

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Solution for F(-3)=2x^2+5-9 equation: 


Simplifying
F(-3) = 2x2 + 5 + -9

Reorder the terms for easier multiplication:
-3F = 2x2 + 5 + -9

Reorder the terms:
-3F = 5 + -9 + 2x2

Combine like terms: 5 + -9 = -4
-3F = -4 + 2x2

Solving
-3F = -4 + 2x2

Solving for variable 'F'.

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

Divide each side by '-3'.
F = 1.333333333 + -0.6666666667x2

Simplifying
F = 1.333333333 + -0.6666666667x2

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