144=x*x+2*6

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Solution for 144=x*x+2*6 equation: 


Simplifying
144 = x * x + 2 * 6

Multiply x * x
144 = x2 + 2 * 6

Multiply 2 * 6
144 = x2 + 12

Reorder the terms:
144 = 12 + x2

Solving
144 = 12 + x2

Solving for variable 'x'.

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

Add '-1x2' to each side of the equation.
144 + -1x2 = 12 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
144 + -1x2 = 12 + 0
144 + -1x2 = 12

Add '-144' to each side of the equation.
144 + -144 + -1x2 = 12 + -144

Combine like terms: 144 + -144 = 0
0 + -1x2 = 12 + -144
-1x2 = 12 + -144

Combine like terms: 12 + -144 = -132
-1x2 = -132

Divide each side by '-1'.
x2 = 132

Simplifying
x2 = 132

Take the square root of each side:
x = {-11.489125293, 11.489125293}

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