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Simplifying (x + -3)(2x + 1) = 4 Reorder the terms: (-3 + x)(2x + 1) = 4 Reorder the terms: (-3 + x)(1 + 2x) = 4 Multiply (-3 + x) * (1 + 2x) (-3(1 + 2x) + x(1 + 2x)) = 4 ((1 * -3 + 2x * -3) + x(1 + 2x)) = 4 ((-3 + -6x) + x(1 + 2x)) = 4 (-3 + -6x + (1 * x + 2x * x)) = 4 (-3 + -6x + (1x + 2x2)) = 4 Combine like terms: -6x + 1x = -5x (-3 + -5x + 2x2) = 4 Solving -3 + -5x + 2x2 = 4 Solving for variable 'x'. Reorder the terms: -3 + -4 + -5x + 2x2 = 4 + -4 Combine like terms: -3 + -4 = -7 -7 + -5x + 2x2 = 4 + -4 Combine like terms: 4 + -4 = 0 -7 + -5x + 2x2 = 0 Factor a trinomial. (-1 + -1x)(7 + -2x) = 0Subproblem 1
Set the factor '(-1 + -1x)' equal to zero and attempt to solve: Simplifying -1 + -1x = 0 Solving -1 + -1x = 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 + -1x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -1x = 0 + 1 -1x = 0 + 1 Combine like terms: 0 + 1 = 1 -1x = 1 Divide each side by '-1'. x = -1 Simplifying x = -1Subproblem 2
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 = 3.5Solution
x = {-1, 3.5}
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