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Simplifying
-3x2 + 75 = 0
Reorder the terms:
75 + -3x2 = 0
Solving
75 + -3x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-75' to each side of the equation.
75 + -75 + -3x2 = 0 + -75
Combine like terms: 75 + -75 = 0
0 + -3x2 = 0 + -75
-3x2 = 0 + -75
Combine like terms: 0 + -75 = -75
-3x2 = -75
Divide each side by '-3'.
x2 = 25
Simplifying
x2 = 25
Take the square root of each side:
x = {-5, 5}
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