F(x)=x^2+7x-21

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Solution for F(x)=x^2+7x-21 equation: 


Simplifying
F(x) = x2 + 7x + -21

Multiply F * x
xF = x2 + 7x + -21

Reorder the terms:
xF = -21 + 7x + x2

Solving
xF = -21 + 7x + x2

Solving for variable 'x'.

Reorder the terms:
21 + -7x + xF + -1x2 = -21 + 7x + x2 + 21 + -7x + -1x2

Reorder the terms:
21 + -7x + xF + -1x2 = -21 + 21 + 7x + -7x + x2 + -1x2

Combine like terms: -21 + 21 = 0
21 + -7x + xF + -1x2 = 0 + 7x + -7x + x2 + -1x2
21 + -7x + xF + -1x2 = 7x + -7x + x2 + -1x2

Combine like terms: 7x + -7x = 0
21 + -7x + xF + -1x2 = 0 + x2 + -1x2
21 + -7x + xF + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
21 + -7x + xF + -1x2 = 0

The solution to this equation could not be determined.

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