F(x)=7-3x-x^2

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Solution for F(x)=7-3x-x^2 equation: 


Simplifying
F(x) = 7 + -3x + -1x2

Multiply F * x
xF = 7 + -3x + -1x2

Solving
xF = 7 + -3x + -1x2

Solving for variable 'x'.

Reorder the terms:
-7 + 3x + xF + x2 = 7 + -3x + -1x2 + -7 + 3x + x2

Reorder the terms:
-7 + 3x + xF + x2 = 7 + -7 + -3x + 3x + -1x2 + x2

Combine like terms: 7 + -7 = 0
-7 + 3x + xF + x2 = 0 + -3x + 3x + -1x2 + x2
-7 + 3x + xF + x2 = -3x + 3x + -1x2 + x2

Combine like terms: -3x + 3x = 0
-7 + 3x + xF + x2 = 0 + -1x2 + x2
-7 + 3x + xF + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
-7 + 3x + xF + x2 = 0

The solution to this equation could not be determined.

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