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Simplifying
15(x2 + -1) = 16
Reorder the terms:
15(-1 + x2) = 16
(-1 * 15 + x2 * 15) = 16
(-15 + 15x2) = 16
Solving
-15 + 15x2 = 16
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 + 15x2 = 16 + 15
Combine like terms: -15 + 15 = 0
0 + 15x2 = 16 + 15
15x2 = 16 + 15
Combine like terms: 16 + 15 = 31
15x2 = 31
Divide each side by '15'.
x2 = 2.066666667
Simplifying
x2 = 2.066666667
Take the square root of each side:
x = {-1.437590577, 1.437590577}
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