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Simplifying
2x2 + -17 = 15
Reorder the terms:
-17 + 2x2 = 15
Solving
-17 + 2x2 = 15
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '17' to each side of the equation.
-17 + 17 + 2x2 = 15 + 17
Combine like terms: -17 + 17 = 0
0 + 2x2 = 15 + 17
2x2 = 15 + 17
Combine like terms: 15 + 17 = 32
2x2 = 32
Divide each side by '2'.
x2 = 16
Simplifying
x2 = 16
Take the square root of each side:
x = {-4, 4}
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