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Simplifying (4x + 7)(x + -7) = 8x + 14 Reorder the terms: (7 + 4x)(x + -7) = 8x + 14 Reorder the terms: (7 + 4x)(-7 + x) = 8x + 14 Multiply (7 + 4x) * (-7 + x) (7(-7 + x) + 4x * (-7 + x)) = 8x + 14 ((-7 * 7 + x * 7) + 4x * (-7 + x)) = 8x + 14 ((-49 + 7x) + 4x * (-7 + x)) = 8x + 14 (-49 + 7x + (-7 * 4x + x * 4x)) = 8x + 14 (-49 + 7x + (-28x + 4x2)) = 8x + 14 Combine like terms: 7x + -28x = -21x (-49 + -21x + 4x2) = 8x + 14 Reorder the terms: -49 + -21x + 4x2 = 14 + 8x Solving -49 + -21x + 4x2 = 14 + 8x Solving for variable 'x'. Reorder the terms: -49 + -14 + -21x + -8x + 4x2 = 14 + 8x + -14 + -8x Combine like terms: -49 + -14 = -63 -63 + -21x + -8x + 4x2 = 14 + 8x + -14 + -8x Combine like terms: -21x + -8x = -29x -63 + -29x + 4x2 = 14 + 8x + -14 + -8x Reorder the terms: -63 + -29x + 4x2 = 14 + -14 + 8x + -8x Combine like terms: 14 + -14 = 0 -63 + -29x + 4x2 = 0 + 8x + -8x -63 + -29x + 4x2 = 8x + -8x Combine like terms: 8x + -8x = 0 -63 + -29x + 4x2 = 0 Factor a trinomial. (-7 + -4x)(9 + -1x) = 0Subproblem 1
Set the factor '(-7 + -4x)' equal to zero and attempt to solve: Simplifying -7 + -4x = 0 Solving -7 + -4x = 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 + -4x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -4x = 0 + 7 -4x = 0 + 7 Combine like terms: 0 + 7 = 7 -4x = 7 Divide each side by '-4'. x = -1.75 Simplifying x = -1.75Subproblem 2
Set the factor '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9Solution
x = {-1.75, 9}
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