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Simplifying
7x2 + -18 = 38
Reorder the terms:
-18 + 7x2 = 38
Solving
-18 + 7x2 = 38
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '18' to each side of the equation.
-18 + 18 + 7x2 = 38 + 18
Combine like terms: -18 + 18 = 0
0 + 7x2 = 38 + 18
7x2 = 38 + 18
Combine like terms: 38 + 18 = 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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