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Simplifying
3x2 + -15 = 70
Reorder the terms:
-15 + 3x2 = 70
Solving
-15 + 3x2 = 70
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '15' to each side of the equation.
-15 + 15 + 3x2 = 70 + 15
Combine like terms: -15 + 15 = 0
0 + 3x2 = 70 + 15
3x2 = 70 + 15
Combine like terms: 70 + 15 = 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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