7-2x^2=-15

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Solution for 7-2x^2=-15 equation: 


Simplifying
7 + -2x2 = -15

Solving
7 + -2x2 = -15

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + -2x2 = -15 + -7

Combine like terms: 7 + -7 = 0
0 + -2x2 = -15 + -7
-2x2 = -15 + -7

Combine like terms: -15 + -7 = -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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