5-2x^2=-20

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Solution for 5-2x^2=-20 equation: 


Simplifying
5 + -2x2 = -20

Solving
5 + -2x2 = -20

Solving for variable 'x'.

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

Add '-5' to each side of the equation.
5 + -5 + -2x2 = -20 + -5

Combine like terms: 5 + -5 = 0
0 + -2x2 = -20 + -5
-2x2 = -20 + -5

Combine like terms: -20 + -5 = -25
-2x2 = -25

Divide each side by '-2'.
x2 = 12.5

Simplifying
x2 = 12.5

Take the square root of each side:
x = {-3.535533906, 3.535533906}

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