(2x+5)(4x-7)=

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Solution for (2x+5)(4x-7)= equation: 


Simplifying
(2x + 5)(4x + -7) = 0

Reorder the terms:
(5 + 2x)(4x + -7) = 0

Reorder the terms:
(5 + 2x)(-7 + 4x) = 0

Multiply (5 + 2x) * (-7 + 4x)
(5(-7 + 4x) + 2x * (-7 + 4x)) = 0
((-7 * 5 + 4x * 5) + 2x * (-7 + 4x)) = 0
((-35 + 20x) + 2x * (-7 + 4x)) = 0
(-35 + 20x + (-7 * 2x + 4x * 2x)) = 0
(-35 + 20x + (-14x + 8x2)) = 0

Combine like terms: 20x + -14x = 6x
(-35 + 6x + 8x2) = 0

Solving
-35 + 6x + 8x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-5 + -2x)(7 + -4x) = 0


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 '(7 + -4x)' equal to zero and attempt to solve:

Simplifying
7 + -4x = 0

Solving
7 + -4x = 0

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

Add '-7' to each side of the equation.
7 + -7 + -4x = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -4x = 0 + -7
-4x = 0 + -7

Combine like terms: 0 + -7 = -7
-4x = -7

Divide each side by '-4'.
x = 1.75

Simplifying
x = 1.75
Solution
x = {-2.5, 1.75}

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