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Simplifying
15x2 + 13 + -20 = 0
Reorder the terms:
13 + -20 + 15x2 = 0
Combine like terms: 13 + -20 = -7
-7 + 15x2 = 0
Solving
-7 + 15x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '7' to each side of the equation.
-7 + 7 + 15x2 = 0 + 7
Combine like terms: -7 + 7 = 0
0 + 15x2 = 0 + 7
15x2 = 0 + 7
Combine like terms: 0 + 7 = 7
15x2 = 7
Divide each side by '15'.
x2 = 0.4666666667
Simplifying
x2 = 0.4666666667
Take the square root of each side:
x = {-0.683130051, 0.683130051}
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