(8x+9)(7x-5)=0

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Solution for (8x+9)(7x-5)=0 equation:


Simplifying
(8x + 9)(7x + -5) = 0

Reorder the terms:
(9 + 8x)(7x + -5) = 0

Reorder the terms:
(9 + 8x)(-5 + 7x) = 0

Multiply (9 + 8x) * (-5 + 7x)
(9(-5 + 7x) + 8x * (-5 + 7x)) = 0
((-5 * 9 + 7x * 9) + 8x * (-5 + 7x)) = 0
((-45 + 63x) + 8x * (-5 + 7x)) = 0
(-45 + 63x + (-5 * 8x + 7x * 8x)) = 0
(-45 + 63x + (-40x + 56x2)) = 0

Combine like terms: 63x + -40x = 23x
(-45 + 23x + 56x2) = 0

Solving
-45 + 23x + 56x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-9 + -8x)(5 + -7x) = 0

Subproblem 1

Set the factor '(-9 + -8x)' equal to zero and attempt to solve: Simplifying -9 + -8x = 0 Solving -9 + -8x = 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 + -8x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -8x = 0 + 9 -8x = 0 + 9 Combine like terms: 0 + 9 = 9 -8x = 9 Divide each side by '-8'. x = -1.125 Simplifying x = -1.125

Subproblem 2

Set the factor '(5 + -7x)' equal to zero and attempt to solve: Simplifying 5 + -7x = 0 Solving 5 + -7x = 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 + -7x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -7x = 0 + -5 -7x = 0 + -5 Combine like terms: 0 + -5 = -5 -7x = -5 Divide each side by '-7'. x = 0.7142857143 Simplifying x = 0.7142857143

Solution

x = {-1.125, 0.7142857143}

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