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Simplifying (4x + -7)(7x + 1) = 0 Reorder the terms: (-7 + 4x)(7x + 1) = 0 Reorder the terms: (-7 + 4x)(1 + 7x) = 0 Multiply (-7 + 4x) * (1 + 7x) (-7(1 + 7x) + 4x * (1 + 7x)) = 0 ((1 * -7 + 7x * -7) + 4x * (1 + 7x)) = 0 ((-7 + -49x) + 4x * (1 + 7x)) = 0 (-7 + -49x + (1 * 4x + 7x * 4x)) = 0 (-7 + -49x + (4x + 28x2)) = 0 Combine like terms: -49x + 4x = -45x (-7 + -45x + 28x2) = 0 Solving -7 + -45x + 28x2 = 0 Solving for variable 'x'. Factor a trinomial. (-1 + -7x)(7 + -4x) = 0Subproblem 1
Set the factor '(-1 + -7x)' equal to zero and attempt to solve: Simplifying -1 + -7x = 0 Solving -1 + -7x = 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 + -7x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -7x = 0 + 1 -7x = 0 + 1 Combine like terms: 0 + 1 = 1 -7x = 1 Divide each side by '-7'. x = -0.1428571429 Simplifying x = -0.1428571429Subproblem 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 = {-0.1428571429, 1.75}
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