(3x+1)(2x+5x-2)=

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Solution for (3x+1)(2x+5x-2)= equation: 


Simplifying
(3x + 1)(2x + 5x + -2) = 0

Reorder the terms:
(1 + 3x)(2x + 5x + -2) = 0

Reorder the terms:
(1 + 3x)(-2 + 2x + 5x) = 0

Combine like terms: 2x + 5x = 7x
(1 + 3x)(-2 + 7x) = 0

Multiply (1 + 3x) * (-2 + 7x)
(1(-2 + 7x) + 3x * (-2 + 7x)) = 0
((-2 * 1 + 7x * 1) + 3x * (-2 + 7x)) = 0
((-2 + 7x) + 3x * (-2 + 7x)) = 0
(-2 + 7x + (-2 * 3x + 7x * 3x)) = 0
(-2 + 7x + (-6x + 21x2)) = 0

Combine like terms: 7x + -6x = 1x
(-2 + 1x + 21x2) = 0

Solving
-2 + 1x + 21x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-1 + -3x)(2 + -7x) = 0


Subproblem 1
Set the factor '(-1 + -3x)' equal to zero and attempt to solve:

Simplifying
-1 + -3x = 0

Solving
-1 + -3x = 0

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

Add '1' to each side of the equation.
-1 + 1 + -3x = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -3x = 0 + 1
-3x = 0 + 1

Combine like terms: 0 + 1 = 1
-3x = 1

Divide each side by '-3'.
x = -0.3333333333

Simplifying
x = -0.3333333333

Subproblem 2
Set the factor '(2 + -7x)' equal to zero and attempt to solve:

Simplifying
2 + -7x = 0

Solving
2 + -7x = 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 + -7x = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -7x = 0 + -2
-7x = 0 + -2

Combine like terms: 0 + -2 = -2
-7x = -2

Divide each side by '-7'.
x = 0.2857142857

Simplifying
x = 0.2857142857
Solution
x = {-0.3333333333, 0.2857142857}

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