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Simplifying
-5x2 + -9 + 9 = 0
Reorder the terms:
-9 + 9 + -5x2 = 0
Combine like terms: -9 + 9 = 0
0 + -5x2 = 0
-5x2 = 0
Solving
-5x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '-5'.
x2 = 0
Simplifying
x2 = 0
Take the square root of each side:
x = {0}
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