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Simplifying
12 + -10x * 5x = -18
Reorder the terms for easier multiplication:
12 + -10 * 5x * x = -18
Multiply -10 * 5
12 + -50x * x = -18
Multiply x * x
12 + -50x2 = -18
Solving
12 + -50x2 = -18
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-12' to each side of the equation.
12 + -12 + -50x2 = -18 + -12
Combine like terms: 12 + -12 = 0
0 + -50x2 = -18 + -12
-50x2 = -18 + -12
Combine like terms: -18 + -12 = -30
-50x2 = -30
Divide each side by '-50'.
x2 = 0.6
Simplifying
x2 = 0.6
Take the square root of each side:
x = {-0.774596669, 0.774596669}
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