X^2-4=45

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Solution for X^2-4=45 equation: 


Simplifying
X2 + -4 = 45

Reorder the terms:
-4 + X2 = 45

Solving
-4 + X2 = 45

Solving for variable 'X'.

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

Add '4' to each side of the equation.
-4 + 4 + X2 = 45 + 4

Combine like terms: -4 + 4 = 0
0 + X2 = 45 + 4
X2 = 45 + 4

Combine like terms: 45 + 4 = 49
X2 = 49

Simplifying
X2 = 49

Take the square root of each side:
X = {-7, 7}

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