(4x+3)(-2x-5)=

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Solution for (4x+3)(-2x-5)= equation: 


Simplifying
(4x + 3)(-2x + -5) = 0

Reorder the terms:
(3 + 4x)(-2x + -5) = 0

Reorder the terms:
(3 + 4x)(-5 + -2x) = 0

Multiply (3 + 4x) * (-5 + -2x)
(3(-5 + -2x) + 4x * (-5 + -2x)) = 0
((-5 * 3 + -2x * 3) + 4x * (-5 + -2x)) = 0
((-15 + -6x) + 4x * (-5 + -2x)) = 0
(-15 + -6x + (-5 * 4x + -2x * 4x)) = 0
(-15 + -6x + (-20x + -8x2)) = 0

Combine like terms: -6x + -20x = -26x
(-15 + -26x + -8x2) = 0

Solving
-15 + -26x + -8x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '-1'.
-1(15 + 26x + 8x2) = 0

Factor a trinomial.
-1((5 + 2x)(3 + 4x)) = 0

Ignore the factor -1.

Subproblem 1
Set the factor '(5 + 2x)' equal to zero and attempt to solve:

Simplifying
5 + 2x = 0

Solving
5 + 2x = 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 + 2x = 0 + -5

Combine like terms: 5 + -5 = 0
0 + 2x = 0 + -5
2x = 0 + -5

Combine like terms: 0 + -5 = -5
2x = -5

Divide each side by '2'.
x = -2.5

Simplifying
x = -2.5

Subproblem 2
Set the factor '(3 + 4x)' equal to zero and attempt to solve:

Simplifying
3 + 4x = 0

Solving
3 + 4x = 0

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

Add '-3' to each side of the equation.
3 + -3 + 4x = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 4x = 0 + -3
4x = 0 + -3

Combine like terms: 0 + -3 = -3
4x = -3

Divide each side by '4'.
x = -0.75

Simplifying
x = -0.75
Solution
x = {-2.5, -0.75}

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