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Simplifying
10x2 + -75 = 15
Reorder the terms:
-75 + 10x2 = 15
Solving
-75 + 10x2 = 15
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '75' to each side of the equation.
-75 + 75 + 10x2 = 15 + 75
Combine like terms: -75 + 75 = 0
0 + 10x2 = 15 + 75
10x2 = 15 + 75
Combine like terms: 15 + 75 = 90
10x2 = 90
Divide each side by '10'.
x2 = 9
Simplifying
x2 = 9
Take the square root of each side:
x = {-3, 3}
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