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Simplifying (2x + 7)(4x + -7) = 0 Reorder the terms: (7 + 2x)(4x + -7) = 0 Reorder the terms: (7 + 2x)(-7 + 4x) = 0 Multiply (7 + 2x) * (-7 + 4x) (7(-7 + 4x) + 2x * (-7 + 4x)) = 0 ((-7 * 7 + 4x * 7) + 2x * (-7 + 4x)) = 0 ((-49 + 28x) + 2x * (-7 + 4x)) = 0 (-49 + 28x + (-7 * 2x + 4x * 2x)) = 0 (-49 + 28x + (-14x + 8x2)) = 0 Combine like terms: 28x + -14x = 14x (-49 + 14x + 8x2) = 0 Solving -49 + 14x + 8x2 = 0 Solving for variable 'x'. Factor a trinomial. (-7 + -2x)(7 + -4x) = 0Subproblem 1
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 = -3.5Subproblem 2
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 = 1.75Solution
x = {-3.5, 1.75}
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