(x+3y)(2x+y)=

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Solution for (x+3y)(2x+y)= equation: 


Simplifying
(x + 3y)(2x + y) = 0

Multiply (x + 3y) * (2x + y)
(x(2x + y) + 3y * (2x + y)) = 0
((2x * x + y * x) + 3y * (2x + y)) = 0

Reorder the terms:
((xy + 2x2) + 3y * (2x + y)) = 0
((xy + 2x2) + 3y * (2x + y)) = 0
(xy + 2x2 + (2x * 3y + y * 3y)) = 0
(xy + 2x2 + (6xy + 3y2)) = 0

Reorder the terms:
(xy + 6xy + 2x2 + 3y2) = 0

Combine like terms: xy + 6xy = 7xy
(7xy + 2x2 + 3y2) = 0

Solving
7xy + 2x2 + 3y2 = 0

Solving for variable 'x'.

Factor a trinomial.
(2x + y)(x + 3y) = 0


Subproblem 1
Set the factor '(2x + y)' equal to zero and attempt to solve:

Simplifying
2x + y = 0

Solving
2x + y = 0

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

Add '-1y' to each side of the equation.
2x + y + -1y = 0 + -1y

Combine like terms: y + -1y = 0
2x + 0 = 0 + -1y
2x = 0 + -1y
Remove the zero:
2x = -1y

Divide each side by '2'.
x = -0.5y

Simplifying
x = -0.5y

Subproblem 2
Set the factor '(x + 3y)' equal to zero and attempt to solve:

Simplifying
x + 3y = 0

Solving
x + 3y = 0

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

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

Combine like terms: 3y + -3y = 0
x + 0 = 0 + -3y
x = 0 + -3y
Remove the zero:
x = -3y

Simplifying
x = -3y
Solution
x = {-0.5y, -3y}

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