6+x*x=91

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Solution for 6+x*x=91 equation: 


Simplifying
6 + x * x = 91

Multiply x * x
6 + x2 = 91

Solving
6 + x2 = 91

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + x2 = 91 + -6

Combine like terms: 6 + -6 = 0
0 + x2 = 91 + -6
x2 = 91 + -6

Combine like terms: 91 + -6 = 85
x2 = 85

Simplifying
x2 = 85

Take the square root of each side:
x = {-9.219544457, 9.219544457}

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