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Simplifying
10 + -1x2 + 5 = 0
Reorder the terms:
10 + 5 + -1x2 = 0
Combine like terms: 10 + 5 = 15
15 + -1x2 = 0
Solving
15 + -1x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-15' to each side of the equation.
15 + -15 + -1x2 = 0 + -15
Combine like terms: 15 + -15 = 0
0 + -1x2 = 0 + -15
-1x2 = 0 + -15
Combine like terms: 0 + -15 = -15
-1x2 = -15
Divide each side by '-1'.
x2 = 15
Simplifying
x2 = 15
Take the square root of each side:
x = {-3.872983346, 3.872983346}
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