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Simplifying x2 = 5(x + 30) Reorder the terms: x2 = 5(30 + x) x2 = (30 * 5 + x * 5) x2 = (150 + 5x) Solving x2 = 150 + 5x Solving for variable 'x'. Reorder the terms: -150 + -5x + x2 = 150 + 5x + -150 + -5x Reorder the terms: -150 + -5x + x2 = 150 + -150 + 5x + -5x Combine like terms: 150 + -150 = 0 -150 + -5x + x2 = 0 + 5x + -5x -150 + -5x + x2 = 5x + -5x Combine like terms: 5x + -5x = 0 -150 + -5x + x2 = 0 Factor a trinomial. (-10 + -1x)(15 + -1x) = 0Subproblem 1
Set the factor '(-10 + -1x)' equal to zero and attempt to solve: Simplifying -10 + -1x = 0 Solving -10 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + -1x = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -1x = 0 + 10 -1x = 0 + 10 Combine like terms: 0 + 10 = 10 -1x = 10 Divide each side by '-1'. x = -10 Simplifying x = -10Subproblem 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 = {-10, 15}
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