x^2-45=20

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Solution for x^2-45=20 equation: 


Simplifying
x2 + -45 = 20

Reorder the terms:
-45 + x2 = 20

Solving
-45 + x2 = 20

Solving for variable 'x'.

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

Add '45' to each side of the equation.
-45 + 45 + x2 = 20 + 45

Combine like terms: -45 + 45 = 0
0 + x2 = 20 + 45
x2 = 20 + 45

Combine like terms: 20 + 45 = 65
x2 = 65

Simplifying
x2 = 65

Take the square root of each side:
x = {-8.062257748, 8.062257748}

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