(8x-5)(5x+7)=0

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Solution for (8x-5)(5x+7)=0 equation:


Simplifying
(8x + -5)(5x + 7) = 0

Reorder the terms:
(-5 + 8x)(5x + 7) = 0

Reorder the terms:
(-5 + 8x)(7 + 5x) = 0

Multiply (-5 + 8x) * (7 + 5x)
(-5(7 + 5x) + 8x * (7 + 5x)) = 0
((7 * -5 + 5x * -5) + 8x * (7 + 5x)) = 0
((-35 + -25x) + 8x * (7 + 5x)) = 0
(-35 + -25x + (7 * 8x + 5x * 8x)) = 0
(-35 + -25x + (56x + 40x2)) = 0

Combine like terms: -25x + 56x = 31x
(-35 + 31x + 40x2) = 0

Solving
-35 + 31x + 40x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-7 + -5x)(5 + -8x) = 0

Subproblem 1

Set the factor '(-7 + -5x)' equal to zero and attempt to solve: Simplifying -7 + -5x = 0 Solving -7 + -5x = 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 + -5x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -5x = 0 + 7 -5x = 0 + 7 Combine like terms: 0 + 7 = 7 -5x = 7 Divide each side by '-5'. x = -1.4 Simplifying x = -1.4

Subproblem 2

Set the factor '(5 + -8x)' equal to zero and attempt to solve: Simplifying 5 + -8x = 0 Solving 5 + -8x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -8x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -8x = 0 + -5 -8x = 0 + -5 Combine like terms: 0 + -5 = -5 -8x = -5 Divide each side by '-8'. x = 0.625 Simplifying x = 0.625

Solution

x = {-1.4, 0.625}

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