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Simplifying
9x2 + -56 = 25
Reorder the terms:
-56 + 9x2 = 25
Solving
-56 + 9x2 = 25
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '56' to each side of the equation.
-56 + 56 + 9x2 = 25 + 56
Combine like terms: -56 + 56 = 0
0 + 9x2 = 25 + 56
9x2 = 25 + 56
Combine like terms: 25 + 56 = 81
9x2 = 81
Divide each side by '9'.
x2 = 9
Simplifying
x2 = 9
Take the square root of each side:
x = {-3, 3}
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