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

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Solution for (2x+9)(5x-8)=0 equation: 


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

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

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

Multiply (9 + 2x) * (-8 + 5x)
(9(-8 + 5x) + 2x * (-8 + 5x)) = 0
((-8 * 9 + 5x * 9) + 2x * (-8 + 5x)) = 0
((-72 + 45x) + 2x * (-8 + 5x)) = 0
(-72 + 45x + (-8 * 2x + 5x * 2x)) = 0
(-72 + 45x + (-16x + 10x2)) = 0

Combine like terms: 45x + -16x = 29x
(-72 + 29x + 10x2) = 0

Solving
-72 + 29x + 10x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-9 + -2x)(8 + -5x) = 0


Subproblem 1
Set the factor '(-9 + -2x)' equal to zero and attempt to solve:

Simplifying
-9 + -2x = 0

Solving
-9 + -2x = 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 + -2x = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -2x = 0 + 9
-2x = 0 + 9

Combine like terms: 0 + 9 = 9
-2x = 9

Divide each side by '-2'.
x = -4.5

Simplifying
x = -4.5

Subproblem 2
Set the factor '(8 + -5x)' equal to zero and attempt to solve:

Simplifying
8 + -5x = 0

Solving
8 + -5x = 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 + -5x = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -5x = 0 + -8
-5x = 0 + -8

Combine like terms: 0 + -8 = -8
-5x = -8

Divide each side by '-5'.
x = 1.6

Simplifying
x = 1.6
Solution
x = {-4.5, 1.6}

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