(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 = 34x
(8 + 34x + 35x2) = 0

Solving
8 + 34x + 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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