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Simplifying
5x2 + 87 = 1x2 + 231
Reorder the terms:
87 + 5x2 = 1x2 + 231
Reorder the terms:
87 + 5x2 = 231 + 1x2
Solving
87 + 5x2 = 231 + 1x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-1x2' to each side of the equation.
87 + 5x2 + -1x2 = 231 + 1x2 + -1x2
Combine like terms: 5x2 + -1x2 = 4x2
87 + 4x2 = 231 + 1x2 + -1x2
Combine like terms: 1x2 + -1x2 = 0
87 + 4x2 = 231 + 0
87 + 4x2 = 231
Add '-87' to each side of the equation.
87 + -87 + 4x2 = 231 + -87
Combine like terms: 87 + -87 = 0
0 + 4x2 = 231 + -87
4x2 = 231 + -87
Combine like terms: 231 + -87 = 144
4x2 = 144
Divide each side by '4'.
x2 = 36
Simplifying
x2 = 36
Take the square root of each side:
x = {-6, 6}
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