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Simplifying
2x2 + -19 = 31
Reorder the terms:
-19 + 2x2 = 31
Solving
-19 + 2x2 = 31
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '19' to each side of the equation.
-19 + 19 + 2x2 = 31 + 19
Combine like terms: -19 + 19 = 0
0 + 2x2 = 31 + 19
2x2 = 31 + 19
Combine like terms: 31 + 19 = 50
2x2 = 50
Divide each side by '2'.
x2 = 25
Simplifying
x2 = 25
Take the square root of each side:
x = {-5, 5}
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