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Simplifying (4x + 1)(5 + -2x) = 0 Reorder the terms: (1 + 4x)(5 + -2x) = 0 Multiply (1 + 4x) * (5 + -2x) (1(5 + -2x) + 4x * (5 + -2x)) = 0 ((5 * 1 + -2x * 1) + 4x * (5 + -2x)) = 0 ((5 + -2x) + 4x * (5 + -2x)) = 0 (5 + -2x + (5 * 4x + -2x * 4x)) = 0 (5 + -2x + (20x + -8x2)) = 0 Combine like terms: -2x + 20x = 18x (5 + 18x + -8x2) = 0 Solving 5 + 18x + -8x2 = 0 Solving for variable 'x'. Factor a trinomial. (5 + -2x)(1 + 4x) = 0Subproblem 1
Set the factor '(5 + -2x)' equal to zero and attempt to solve: Simplifying 5 + -2x = 0 Solving 5 + -2x = 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 + -2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2x = 0 + -5 -2x = 0 + -5 Combine like terms: 0 + -5 = -5 -2x = -5 Divide each side by '-2'. x = 2.5 Simplifying x = 2.5Subproblem 2
Set the factor '(1 + 4x)' equal to zero and attempt to solve: Simplifying 1 + 4x = 0 Solving 1 + 4x = 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 + 4x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 4x = 0 + -1 4x = 0 + -1 Combine like terms: 0 + -1 = -1 4x = -1 Divide each side by '4'. x = -0.25 Simplifying x = -0.25Solution
x = {2.5, -0.25}
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