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Simplifying
2x2 + -15 + -2 = 0
Reorder the terms:
-15 + -2 + 2x2 = 0
Combine like terms: -15 + -2 = -17
-17 + 2x2 = 0
Solving
-17 + 2x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '17' to each side of the equation.
-17 + 17 + 2x2 = 0 + 17
Combine like terms: -17 + 17 = 0
0 + 2x2 = 0 + 17
2x2 = 0 + 17
Combine like terms: 0 + 17 = 17
2x2 = 17
Divide each side by '2'.
x2 = 8.5
Simplifying
x2 = 8.5
Take the square root of each side:
x = {-2.915475947, 2.915475947}
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