9+-8x(x)=-7

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Solution for 9+-8x(x)=-7 equation: 


Simplifying
9 + -8x(x) = -7

Multiply x * x
9 + -8x2 = -7

Solving
9 + -8x2 = -7

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + -8x2 = -7 + -9

Combine like terms: 9 + -9 = 0
0 + -8x2 = -7 + -9
-8x2 = -7 + -9

Combine like terms: -7 + -9 = -16
-8x2 = -16

Divide each side by '-8'.
x2 = 2

Simplifying
x2 = 2

Take the square root of each side:
x = {-1.414213562, 1.414213562}

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