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Simplifying 15x2 = 30x + 45 Reorder the terms: 15x2 = 45 + 30x Solving 15x2 = 45 + 30x Solving for variable 'x'. Reorder the terms: -45 + -30x + 15x2 = 45 + 30x + -45 + -30x Reorder the terms: -45 + -30x + 15x2 = 45 + -45 + 30x + -30x Combine like terms: 45 + -45 = 0 -45 + -30x + 15x2 = 0 + 30x + -30x -45 + -30x + 15x2 = 30x + -30x Combine like terms: 30x + -30x = 0 -45 + -30x + 15x2 = 0 Factor out the Greatest Common Factor (GCF), '15'. 15(-3 + -2x + x2) = 0 Factor a trinomial. 15((-1 + -1x)(3 + -1x)) = 0 Ignore the factor 15.Subproblem 1
Set the factor '(-1 + -1x)' equal to zero and attempt to solve: Simplifying -1 + -1x = 0 Solving -1 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -1x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -1x = 0 + 1 -1x = 0 + 1 Combine like terms: 0 + 1 = 1 -1x = 1 Divide each side by '-1'. x = -1 Simplifying x = -1Subproblem 2
Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3Solution
x = {-1, 3}
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