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Simplifying
15 + -3(5x2 + -3) = 0
Reorder the terms:
15 + -3(-3 + 5x2) = 0
15 + (-3 * -3 + 5x2 * -3) = 0
15 + (9 + -15x2) = 0
Combine like terms: 15 + 9 = 24
24 + -15x2 = 0
Solving
24 + -15x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-24' to each side of the equation.
24 + -24 + -15x2 = 0 + -24
Combine like terms: 24 + -24 = 0
0 + -15x2 = 0 + -24
-15x2 = 0 + -24
Combine like terms: 0 + -24 = -24
-15x2 = -24
Divide each side by '-15'.
x2 = 1.6
Simplifying
x2 = 1.6
Take the square root of each side:
x = {-1.264911064, 1.264911064}
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