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Simplifying (x)[(x) + 15] = 450 x[x + 15] = 450 Reorder the terms: x[15 + x] = 450 [15 * x + x * x] = 450 [15x + x2] = 450 Solving 15x + x2 = 450 Solving for variable 'x'. Reorder the terms: -450 + 15x + x2 = 450 + -450 Combine like terms: 450 + -450 = 0 -450 + 15x + x2 = 0 Factor a trinomial. (-30 + -1x)(15 + -1x) = 0Subproblem 1
Set the factor '(-30 + -1x)' equal to zero and attempt to solve: Simplifying -30 + -1x = 0 Solving -30 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '30' to each side of the equation. -30 + 30 + -1x = 0 + 30 Combine like terms: -30 + 30 = 0 0 + -1x = 0 + 30 -1x = 0 + 30 Combine like terms: 0 + 30 = 30 -1x = 30 Divide each side by '-1'. x = -30 Simplifying x = -30Subproblem 2
Set the factor '(15 + -1x)' equal to zero and attempt to solve: Simplifying 15 + -1x = 0 Solving 15 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + -1x = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -1x = 0 + -15 -1x = 0 + -15 Combine like terms: 0 + -15 = -15 -1x = -15 Divide each side by '-1'. x = 15 Simplifying x = 15Solution
x = {-30, 15}
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