f(6)=x^2+3x-8

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Solution for f(6)=x^2+3x-8 equation: 


Simplifying
f(6) = x2 + 3x + -8

Reorder the terms for easier multiplication:
6f = x2 + 3x + -8

Reorder the terms:
6f = -8 + 3x + x2

Solving
6f = -8 + 3x + x2

Solving for variable 'f'.

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

Divide each side by '6'.
f = -1.333333333 + 0.5x + 0.1666666667x2

Simplifying
f = -1.333333333 + 0.5x + 0.1666666667x2

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