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Simplifying
-7x2 + 17 = -39
Reorder the terms:
17 + -7x2 = -39
Solving
17 + -7x2 = -39
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-17' to each side of the equation.
17 + -17 + -7x2 = -39 + -17
Combine like terms: 17 + -17 = 0
0 + -7x2 = -39 + -17
-7x2 = -39 + -17
Combine like terms: -39 + -17 = -56
-7x2 = -56
Divide each side by '-7'.
x2 = 8
Simplifying
x2 = 8
Take the square root of each side:
x = {-2.828427125, 2.828427125}
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