20x^2-80=0

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Solution for 20x^2-80=0 equation: 


Simplifying
20x2 + -80 = 0

Reorder the terms:
-80 + 20x2 = 0

Solving
-80 + 20x2 = 0

Solving for variable 'x'.

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

Add '80' to each side of the equation.
-80 + 80 + 20x2 = 0 + 80

Combine like terms: -80 + 80 = 0
0 + 20x2 = 0 + 80
20x2 = 0 + 80

Combine like terms: 0 + 80 = 80
20x2 = 80

Divide each side by '20'.
x2 = 4

Simplifying
x2 = 4

Take the square root of each side:
x = {-2, 2}

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