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Simplifying
2x2 + -5 = 157
Reorder the terms:
-5 + 2x2 = 157
Solving
-5 + 2x2 = 157
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '5' to each side of the equation.
-5 + 5 + 2x2 = 157 + 5
Combine like terms: -5 + 5 = 0
0 + 2x2 = 157 + 5
2x2 = 157 + 5
Combine like terms: 157 + 5 = 162
2x2 = 162
Divide each side by '2'.
x2 = 81
Simplifying
x2 = 81
Take the square root of each side:
x = {-9, 9}
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