2x^2+18=40

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Solution for 2x^2+18=40 equation: 


Simplifying
2x2 + 18 = 40

Reorder the terms:
18 + 2x2 = 40

Solving
18 + 2x2 = 40

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + 2x2 = 40 + -18

Combine like terms: 18 + -18 = 0
0 + 2x2 = 40 + -18
2x2 = 40 + -18

Combine like terms: 40 + -18 = 22
2x2 = 22

Divide each side by '2'.
x2 = 11

Simplifying
x2 = 11

Take the square root of each side:
x = {-3.31662479, 3.31662479}

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