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Simplifying (5x + -1)(x + 4) = 0 Reorder the terms: (-1 + 5x)(x + 4) = 0 Reorder the terms: (-1 + 5x)(4 + x) = 0 Multiply (-1 + 5x) * (4 + x) (-1(4 + x) + 5x * (4 + x)) = 0 ((4 * -1 + x * -1) + 5x * (4 + x)) = 0 ((-4 + -1x) + 5x * (4 + x)) = 0 (-4 + -1x + (4 * 5x + x * 5x)) = 0 (-4 + -1x + (20x + 5x2)) = 0 Combine like terms: -1x + 20x = 19x (-4 + 19x + 5x2) = 0 Solving -4 + 19x + 5x2 = 0 Solving for variable 'x'. Factor a trinomial. (-4 + -1x)(1 + -5x) = 0Subproblem 1
Set the factor '(-4 + -1x)' equal to zero and attempt to solve: Simplifying -4 + -1x = 0 Solving -4 + -1x = 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 + -1x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1x = 0 + 4 -1x = 0 + 4 Combine like terms: 0 + 4 = 4 -1x = 4 Divide each side by '-1'. x = -4 Simplifying x = -4Subproblem 2
Set the factor '(1 + -5x)' equal to zero and attempt to solve: Simplifying 1 + -5x = 0 Solving 1 + -5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -5x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -5x = 0 + -1 -5x = 0 + -1 Combine like terms: 0 + -1 = -1 -5x = -1 Divide each side by '-5'. x = 0.2 Simplifying x = 0.2Solution
x = {-4, 0.2}
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