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Simplifying
3x2 + -5 = 80
Reorder the terms:
-5 + 3x2 = 80
Solving
-5 + 3x2 = 80
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '5' to each side of the equation.
-5 + 5 + 3x2 = 80 + 5
Combine like terms: -5 + 5 = 0
0 + 3x2 = 80 + 5
3x2 = 80 + 5
Combine like terms: 80 + 5 = 85
3x2 = 85
Divide each side by '3'.
x2 = 28.33333333
Simplifying
x2 = 28.33333333
Take the square root of each side:
x = {-5.322906474, 5.322906474}
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