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

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


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

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

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

Multiply (5 + 4x) * (-3 + 4x)
(5(-3 + 4x) + 4x * (-3 + 4x)) = 0
((-3 * 5 + 4x * 5) + 4x * (-3 + 4x)) = 0
((-15 + 20x) + 4x * (-3 + 4x)) = 0
(-15 + 20x + (-3 * 4x + 4x * 4x)) = 0
(-15 + 20x + (-12x + 16x2)) = 0

Combine like terms: 20x + -12x = 8x
(-15 + 8x + 16x2) = 0

Solving
-15 + 8x + 16x2 = 0

Solving for variable 'x'.

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


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

Simplifying
-5 + -4x = 0

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

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

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

Divide each side by '-4'.
x = -1.25

Simplifying
x = -1.25

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 = {-1.25, 0.75}

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