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Simplifying 4x2 + -21x + 15 = -6x + 6 Reorder the terms: 15 + -21x + 4x2 = -6x + 6 Reorder the terms: 15 + -21x + 4x2 = 6 + -6x Solving 15 + -21x + 4x2 = 6 + -6x Solving for variable 'x'. Reorder the terms: 15 + -6 + -21x + 6x + 4x2 = 6 + -6x + -6 + 6x Combine like terms: 15 + -6 = 9 9 + -21x + 6x + 4x2 = 6 + -6x + -6 + 6x Combine like terms: -21x + 6x = -15x 9 + -15x + 4x2 = 6 + -6x + -6 + 6x Reorder the terms: 9 + -15x + 4x2 = 6 + -6 + -6x + 6x Combine like terms: 6 + -6 = 0 9 + -15x + 4x2 = 0 + -6x + 6x 9 + -15x + 4x2 = -6x + 6x Combine like terms: -6x + 6x = 0 9 + -15x + 4x2 = 0 Factor a trinomial. (3 + -4x)(3 + -1x) = 0Subproblem 1
Set the factor '(3 + -4x)' equal to zero and attempt to solve: Simplifying 3 + -4x = 0 Solving 3 + -4x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -4x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -4x = 0 + -3 -4x = 0 + -3 Combine like terms: 0 + -3 = -3 -4x = -3 Divide each side by '-4'. x = 0.75 Simplifying x = 0.75Subproblem 2
Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3Solution
x = {0.75, 3}
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