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Simplifying
X2 + 3x + -6x + 3x = 49
Combine like terms: 3x + -6x = -3x
X2 + -3x + 3x = 49
Combine like terms: -3x + 3x = 0
X2 + 0 = 49
X2 = 49
Solving
X2 = 49
Solving for variable 'X'.
Move all terms containing X to the left, all other terms to the right.
Simplifying
X2 = 49
Take the square root of each side:
X = {-7, 7}
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