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Simplifying
10x2 + -140 = 0
Reorder the terms:
-140 + 10x2 = 0
Solving
-140 + 10x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '140' to each side of the equation.
-140 + 140 + 10x2 = 0 + 140
Combine like terms: -140 + 140 = 0
0 + 10x2 = 0 + 140
10x2 = 0 + 140
Combine like terms: 0 + 140 = 140
10x2 = 140
Divide each side by '10'.
x2 = 14
Simplifying
x2 = 14
Take the square root of each side:
x = {-3.741657387, 3.741657387}
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