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

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


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

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

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

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

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

Solving
-8 + 6x + 35x2 = 0

Solving for variable 'x'.

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


Subproblem 1
Set the factor '(-4 + -7x)' equal to zero and attempt to solve:

Simplifying
-4 + -7x = 0

Solving
-4 + -7x = 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 + -7x = 0 + 4

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

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

Divide each side by '-7'.
x = -0.5714285714

Simplifying
x = -0.5714285714

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

Simplifying
2 + -5x = 0

Solving
2 + -5x = 0

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

Add '-2' to each side of the equation.
2 + -2 + -5x = 0 + -2

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

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

Divide each side by '-5'.
x = 0.4

Simplifying
x = 0.4
Solution
x = {-0.5714285714, 0.4}

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