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Simplifying
25x2 + 15 = 81
Reorder the terms:
15 + 25x2 = 81
Solving
15 + 25x2 = 81
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-15' to each side of the equation.
15 + -15 + 25x2 = 81 + -15
Combine like terms: 15 + -15 = 0
0 + 25x2 = 81 + -15
25x2 = 81 + -15
Combine like terms: 81 + -15 = 66
25x2 = 66
Divide each side by '25'.
x2 = 2.64
Simplifying
x2 = 2.64
Take the square root of each side:
x = {-1.624807681, 1.624807681}
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