2*(11-x^2)=18

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Solution for 2*(11-x^2)=18 equation:


Simplifying
2(11 + -1x2) = 18
(11 * 2 + -1x2 * 2) = 18
(22 + -2x2) = 18

Solving
22 + -2x2 = 18

Solving for variable 'x'.

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

Add '-22' to each side of the equation.
22 + -22 + -2x2 = 18 + -22

Combine like terms: 22 + -22 = 0
0 + -2x2 = 18 + -22
-2x2 = 18 + -22

Combine like terms: 18 + -22 = -4
-2x2 = -4

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

Simplifying
x2 = 2

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

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