(9x-5)(2x+8)=

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Solution for (9x-5)(2x+8)= equation: 


Simplifying
(9x + -5)(2x + 8) = 0

Reorder the terms:
(-5 + 9x)(2x + 8) = 0

Reorder the terms:
(-5 + 9x)(8 + 2x) = 0

Multiply (-5 + 9x) * (8 + 2x)
(-5(8 + 2x) + 9x * (8 + 2x)) = 0
((8 * -5 + 2x * -5) + 9x * (8 + 2x)) = 0
((-40 + -10x) + 9x * (8 + 2x)) = 0
(-40 + -10x + (8 * 9x + 2x * 9x)) = 0
(-40 + -10x + (72x + 18x2)) = 0

Combine like terms: -10x + 72x = 62x
(-40 + 62x + 18x2) = 0

Solving
-40 + 62x + 18x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-20 + 31x + 9x2) = 0

Factor a trinomial.
2((-4 + -1x)(5 + -9x)) = 0

Ignore the factor 2.

Subproblem 1
Set the factor '(-4 + -1x)' equal to zero and attempt to solve:

Simplifying
-4 + -1x = 0

Solving
-4 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '4' to each side of the equation.
-4 + 4 + -1x = 0 + 4

Combine like terms: -4 + 4 = 0
0 + -1x = 0 + 4
-1x = 0 + 4

Combine like terms: 0 + 4 = 4
-1x = 4

Divide each side by '-1'.
x = -4

Simplifying
x = -4

Subproblem 2
Set the factor '(5 + -9x)' equal to zero and attempt to solve:

Simplifying
5 + -9x = 0

Solving
5 + -9x = 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 + -9x = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -9x = 0 + -5
-9x = 0 + -5

Combine like terms: 0 + -5 = -5
-9x = -5

Divide each side by '-9'.
x = 0.5555555556

Simplifying
x = 0.5555555556
Solution
x = {-4, 0.5555555556}

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