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Simplifying
5x2 + -9 = 55
Reorder the terms:
-9 + 5x2 = 55
Solving
-9 + 5x2 = 55
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '9' to each side of the equation.
-9 + 9 + 5x2 = 55 + 9
Combine like terms: -9 + 9 = 0
0 + 5x2 = 55 + 9
5x2 = 55 + 9
Combine like terms: 55 + 9 = 64
5x2 = 64
Divide each side by '5'.
x2 = 12.8
Simplifying
x2 = 12.8
Take the square root of each side:
x = {-3.577708764, 3.577708764}
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