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Simplifying
X2 + 9 = 30
Reorder the terms:
9 + X2 = 30
Solving
9 + X2 = 30
Solving for variable 'X'.
Move all terms containing X to the left, all other terms to the right.
Add '-9' to each side of the equation.
9 + -9 + X2 = 30 + -9
Combine like terms: 9 + -9 = 0
0 + X2 = 30 + -9
X2 = 30 + -9
Combine like terms: 30 + -9 = 21
X2 = 21
Simplifying
X2 = 21
Take the square root of each side:
X = {-4.582575695, 4.582575695}
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