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Simplifying
X2 + 15 = 64
Reorder the terms:
15 + X2 = 64
Solving
15 + X2 = 64
Solving for variable 'X'.
Move all terms containing X to the left, all other terms to the right.
Add '-15' to each side of the equation.
15 + -15 + X2 = 64 + -15
Combine like terms: 15 + -15 = 0
0 + X2 = 64 + -15
X2 = 64 + -15
Combine like terms: 64 + -15 = 49
X2 = 49
Simplifying
X2 = 49
Take the square root of each side:
X = {-7, 7}
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