(5x-4)(2x-9)=

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Solution for (5x-4)(2x-9)= equation: 


Simplifying
(5x + -4)(2x + -9) = 0

Reorder the terms:
(-4 + 5x)(2x + -9) = 0

Reorder the terms:
(-4 + 5x)(-9 + 2x) = 0

Multiply (-4 + 5x) * (-9 + 2x)
(-4(-9 + 2x) + 5x * (-9 + 2x)) = 0
((-9 * -4 + 2x * -4) + 5x * (-9 + 2x)) = 0
((36 + -8x) + 5x * (-9 + 2x)) = 0
(36 + -8x + (-9 * 5x + 2x * 5x)) = 0
(36 + -8x + (-45x + 10x2)) = 0

Combine like terms: -8x + -45x = -53x
(36 + -53x + 10x2) = 0

Solving
36 + -53x + 10x2 = 0

Solving for variable 'x'.

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


Subproblem 1
Set the factor '(4 + -5x)' equal to zero and attempt to solve:

Simplifying
4 + -5x = 0

Solving
4 + -5x = 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 + -5x = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -5x = 0 + -4
-5x = 0 + -4

Combine like terms: 0 + -4 = -4
-5x = -4

Divide each side by '-5'.
x = 0.8

Simplifying
x = 0.8

Subproblem 2
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
Solution
x = {0.8, 4.5}

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