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Simplifying 4x2 + 6x + 21 = 3x2 + 20x + -27 Reorder the terms: 21 + 6x + 4x2 = 3x2 + 20x + -27 Reorder the terms: 21 + 6x + 4x2 = -27 + 20x + 3x2 Solving 21 + 6x + 4x2 = -27 + 20x + 3x2 Solving for variable 'x'. Reorder the terms: 21 + 27 + 6x + -20x + 4x2 + -3x2 = -27 + 20x + 3x2 + 27 + -20x + -3x2 Combine like terms: 21 + 27 = 48 48 + 6x + -20x + 4x2 + -3x2 = -27 + 20x + 3x2 + 27 + -20x + -3x2 Combine like terms: 6x + -20x = -14x 48 + -14x + 4x2 + -3x2 = -27 + 20x + 3x2 + 27 + -20x + -3x2 Combine like terms: 4x2 + -3x2 = 1x2 48 + -14x + 1x2 = -27 + 20x + 3x2 + 27 + -20x + -3x2 Reorder the terms: 48 + -14x + 1x2 = -27 + 27 + 20x + -20x + 3x2 + -3x2 Combine like terms: -27 + 27 = 0 48 + -14x + 1x2 = 0 + 20x + -20x + 3x2 + -3x2 48 + -14x + 1x2 = 20x + -20x + 3x2 + -3x2 Combine like terms: 20x + -20x = 0 48 + -14x + 1x2 = 0 + 3x2 + -3x2 48 + -14x + 1x2 = 3x2 + -3x2 Combine like terms: 3x2 + -3x2 = 0 48 + -14x + 1x2 = 0 Factor a trinomial. (6 + -1x)(8 + -1x) = 0Subproblem 1
Set the factor '(6 + -1x)' equal to zero and attempt to solve: Simplifying 6 + -1x = 0 Solving 6 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -1x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1x = 0 + -6 -1x = 0 + -6 Combine like terms: 0 + -6 = -6 -1x = -6 Divide each side by '-1'. x = 6 Simplifying x = 6Subproblem 2
Set the factor '(8 + -1x)' equal to zero and attempt to solve: Simplifying 8 + -1x = 0 Solving 8 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1x = 0 + -8 -1x = 0 + -8 Combine like terms: 0 + -8 = -8 -1x = -8 Divide each side by '-1'. x = 8 Simplifying x = 8Solution
x = {6, 8}
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