(9x-8)(7x+1)=0

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Solution for (9x-8)(7x+1)=0 equation:


Simplifying
(9x + -8)(7x + 1) = 0

Reorder the terms:
(-8 + 9x)(7x + 1) = 0

Reorder the terms:
(-8 + 9x)(1 + 7x) = 0

Multiply (-8 + 9x) * (1 + 7x)
(-8(1 + 7x) + 9x * (1 + 7x)) = 0
((1 * -8 + 7x * -8) + 9x * (1 + 7x)) = 0
((-8 + -56x) + 9x * (1 + 7x)) = 0
(-8 + -56x + (1 * 9x + 7x * 9x)) = 0
(-8 + -56x + (9x + 63x2)) = 0

Combine like terms: -56x + 9x = -47x
(-8 + -47x + 63x2) = 0

Solving
-8 + -47x + 63x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-1 + -7x)(8 + -9x) = 0

Subproblem 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 = -0.1428571429

Subproblem 2

Set the factor '(8 + -9x)' equal to zero and attempt to solve: Simplifying 8 + -9x = 0 Solving 8 + -9x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -9x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -9x = 0 + -8 -9x = 0 + -8 Combine like terms: 0 + -8 = -8 -9x = -8 Divide each side by '-9'. x = 0.8888888889 Simplifying x = 0.8888888889

Solution

x = {-0.1428571429, 0.8888888889}

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