x^2-61=20

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Solution for x^2-61=20 equation: 


Simplifying
x2 + -61 = 20

Reorder the terms:
-61 + x2 = 20

Solving
-61 + x2 = 20

Solving for variable 'x'.

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

Add '61' to each side of the equation.
-61 + 61 + x2 = 20 + 61

Combine like terms: -61 + 61 = 0
0 + x2 = 20 + 61
x2 = 20 + 61

Combine like terms: 20 + 61 = 81
x2 = 81

Simplifying
x2 = 81

Take the square root of each side:
x = {-9, 9}

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