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Simplifying
8x2 + -31 = 25
Reorder the terms:
-31 + 8x2 = 25
Solving
-31 + 8x2 = 25
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '31' to each side of the equation.
-31 + 31 + 8x2 = 25 + 31
Combine like terms: -31 + 31 = 0
0 + 8x2 = 25 + 31
8x2 = 25 + 31
Combine like terms: 25 + 31 = 56
8x2 = 56
Divide each side by '8'.
x2 = 7
Simplifying
x2 = 7
Take the square root of each side:
x = {-2.645751311, 2.645751311}
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