120=x^2+20

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Solution for 120=x^2+20 equation:


Simplifying
120 = x2 + 20

Reorder the terms:
120 = 20 + x2

Solving
120 = 20 + x2

Solving for variable 'x'.

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

Add '-1x2' to each side of the equation.
120 + -1x2 = 20 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
120 + -1x2 = 20 + 0
120 + -1x2 = 20

Add '-120' to each side of the equation.
120 + -120 + -1x2 = 20 + -120

Combine like terms: 120 + -120 = 0
0 + -1x2 = 20 + -120
-1x2 = 20 + -120

Combine like terms: 20 + -120 = -100
-1x2 = -100

Divide each side by '-1'.
x2 = 100

Simplifying
x2 = 100

Take the square root of each side:
x = {-10, 10}

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