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Simplifying
2x2 + -30 = 70
Reorder the terms:
-30 + 2x2 = 70
Solving
-30 + 2x2 = 70
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '30' to each side of the equation.
-30 + 30 + 2x2 = 70 + 30
Combine like terms: -30 + 30 = 0
0 + 2x2 = 70 + 30
2x2 = 70 + 30
Combine like terms: 70 + 30 = 100
2x2 = 100
Divide each side by '2'.
x2 = 50
Simplifying
x2 = 50
Take the square root of each side:
x = {-7.071067812, 7.071067812}
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