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Simplifying
5x2 + -45 = 45
Reorder the terms:
-45 + 5x2 = 45
Solving
-45 + 5x2 = 45
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '45' to each side of the equation.
-45 + 45 + 5x2 = 45 + 45
Combine like terms: -45 + 45 = 0
0 + 5x2 = 45 + 45
5x2 = 45 + 45
Combine like terms: 45 + 45 = 90
5x2 = 90
Divide each side by '5'.
x2 = 18
Simplifying
x2 = 18
Take the square root of each side:
x = {-4.242640687, 4.242640687}
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