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Simplifying
100x2 + -400 = 0
Reorder the terms:
-400 + 100x2 = 0
Solving
-400 + 100x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '400' to each side of the equation.
-400 + 400 + 100x2 = 0 + 400
Combine like terms: -400 + 400 = 0
0 + 100x2 = 0 + 400
100x2 = 0 + 400
Combine like terms: 0 + 400 = 400
100x2 = 400
Divide each side by '100'.
x2 = 4
Simplifying
x2 = 4
Take the square root of each side:
x = {-2, 2}
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