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Simplifying 15x2 + 55x = 100 Reorder the terms: 55x + 15x2 = 100 Solving 55x + 15x2 = 100 Solving for variable 'x'. Reorder the terms: -100 + 55x + 15x2 = 100 + -100 Combine like terms: 100 + -100 = 0 -100 + 55x + 15x2 = 0 Factor out the Greatest Common Factor (GCF), '5'. 5(-20 + 11x + 3x2) = 0 Factor a trinomial. 5((-5 + -1x)(4 + -3x)) = 0 Ignore the factor 5.Subproblem 1
Set the factor '(-5 + -1x)' equal to zero and attempt to solve: Simplifying -5 + -1x = 0 Solving -5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -1x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1x = 0 + 5 -1x = 0 + 5 Combine like terms: 0 + 5 = 5 -1x = 5 Divide each side by '-1'. x = -5 Simplifying x = -5Subproblem 2
Set the factor '(4 + -3x)' equal to zero and attempt to solve: Simplifying 4 + -3x = 0 Solving 4 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -3x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -3x = 0 + -4 -3x = 0 + -4 Combine like terms: 0 + -4 = -4 -3x = -4 Divide each side by '-3'. x = 1.333333333 Simplifying x = 1.333333333Solution
x = {-5, 1.333333333}
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