(2x+9)(5x-1)=

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Solution for (2x+9)(5x-1)= equation: 


Simplifying
(2x + 9)(5x + -1) = 0

Reorder the terms:
(9 + 2x)(5x + -1) = 0

Reorder the terms:
(9 + 2x)(-1 + 5x) = 0

Multiply (9 + 2x) * (-1 + 5x)
(9(-1 + 5x) + 2x * (-1 + 5x)) = 0
((-1 * 9 + 5x * 9) + 2x * (-1 + 5x)) = 0
((-9 + 45x) + 2x * (-1 + 5x)) = 0
(-9 + 45x + (-1 * 2x + 5x * 2x)) = 0
(-9 + 45x + (-2x + 10x2)) = 0

Combine like terms: 45x + -2x = 43x
(-9 + 43x + 10x2) = 0

Solving
-9 + 43x + 10x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-9 + -2x)(1 + -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 '(1 + -5x)' equal to zero and attempt to solve:

Simplifying
1 + -5x = 0

Solving
1 + -5x = 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 + -5x = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -5x = 0 + -1
-5x = 0 + -1

Combine like terms: 0 + -1 = -1
-5x = -1

Divide each side by '-5'.
x = 0.2

Simplifying
x = 0.2
Solution
x = {-4.5, 0.2}

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