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Simplifying (5x + -2)(2x + 7) = 0 Reorder the terms: (-2 + 5x)(2x + 7) = 0 Reorder the terms: (-2 + 5x)(7 + 2x) = 0 Multiply (-2 + 5x) * (7 + 2x) (-2(7 + 2x) + 5x * (7 + 2x)) = 0 ((7 * -2 + 2x * -2) + 5x * (7 + 2x)) = 0 ((-14 + -4x) + 5x * (7 + 2x)) = 0 (-14 + -4x + (7 * 5x + 2x * 5x)) = 0 (-14 + -4x + (35x + 10x2)) = 0 Combine like terms: -4x + 35x = 31x (-14 + 31x + 10x2) = 0 Solving -14 + 31x + 10x2 = 0 Solving for variable 'x'. Factor a trinomial. (-7 + -2x)(2 + -5x) = 0Subproblem 1
Set the factor '(-7 + -2x)' equal to zero and attempt to solve: Simplifying -7 + -2x = 0 Solving -7 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -2x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -2x = 0 + 7 -2x = 0 + 7 Combine like terms: 0 + 7 = 7 -2x = 7 Divide each side by '-2'. x = -3.5 Simplifying x = -3.5Subproblem 2
Set the factor '(2 + -5x)' equal to zero and attempt to solve: Simplifying 2 + -5x = 0 Solving 2 + -5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -5x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -5x = 0 + -2 -5x = 0 + -2 Combine like terms: 0 + -2 = -2 -5x = -2 Divide each side by '-5'. x = 0.4 Simplifying x = 0.4Solution
x = {-3.5, 0.4}
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