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Simplifying
3x2 + -65 = 7
Reorder the terms:
-65 + 3x2 = 7
Solving
-65 + 3x2 = 7
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '65' to each side of the equation.
-65 + 65 + 3x2 = 7 + 65
Combine like terms: -65 + 65 = 0
0 + 3x2 = 7 + 65
3x2 = 7 + 65
Combine like terms: 7 + 65 = 72
3x2 = 72
Divide each side by '3'.
x2 = 24
Simplifying
x2 = 24
Take the square root of each side:
x = {-4.898979486, 4.898979486}
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