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Simplifying x(5x + 3) = 2x2 + -7x + 25 Reorder the terms: x(3 + 5x) = 2x2 + -7x + 25 (3 * x + 5x * x) = 2x2 + -7x + 25 (3x + 5x2) = 2x2 + -7x + 25 Reorder the terms: 3x + 5x2 = 25 + -7x + 2x2 Solving 3x + 5x2 = 25 + -7x + 2x2 Solving for variable 'x'. Reorder the terms: -25 + 3x + 7x + 5x2 + -2x2 = 25 + -7x + 2x2 + -25 + 7x + -2x2 Combine like terms: 3x + 7x = 10x -25 + 10x + 5x2 + -2x2 = 25 + -7x + 2x2 + -25 + 7x + -2x2 Combine like terms: 5x2 + -2x2 = 3x2 -25 + 10x + 3x2 = 25 + -7x + 2x2 + -25 + 7x + -2x2 Reorder the terms: -25 + 10x + 3x2 = 25 + -25 + -7x + 7x + 2x2 + -2x2 Combine like terms: 25 + -25 = 0 -25 + 10x + 3x2 = 0 + -7x + 7x + 2x2 + -2x2 -25 + 10x + 3x2 = -7x + 7x + 2x2 + -2x2 Combine like terms: -7x + 7x = 0 -25 + 10x + 3x2 = 0 + 2x2 + -2x2 -25 + 10x + 3x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 -25 + 10x + 3x2 = 0 Factor a trinomial. (-5 + -1x)(5 + -3x) = 0Subproblem 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 '(5 + -3x)' equal to zero and attempt to solve: Simplifying 5 + -3x = 0 Solving 5 + -3x = 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 + -3x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -3x = 0 + -5 -3x = 0 + -5 Combine like terms: 0 + -5 = -5 -3x = -5 Divide each side by '-3'. x = 1.666666667 Simplifying x = 1.666666667Solution
x = {-5, 1.666666667}
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