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Simplifying
5x2 + 30 = 90
Reorder the terms:
30 + 5x2 = 90
Solving
30 + 5x2 = 90
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 + 5x2 = 90 + -30
Combine like terms: 30 + -30 = 0
0 + 5x2 = 90 + -30
5x2 = 90 + -30
Combine like terms: 90 + -30 = 60
5x2 = 60
Divide each side by '5'.
x2 = 12
Simplifying
x2 = 12
Take the square root of each side:
x = {-3.464101615, 3.464101615}
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