(5a-2b)(a+3b)=

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Solution for (5a-2b)(a+3b)= equation: 


Simplifying
(5a + -2b)(a + 3b) = 0

Multiply (5a + -2b) * (a + 3b)
(5a * (a + 3b) + -2b * (a + 3b)) = 0
((a * 5a + 3b * 5a) + -2b * (a + 3b)) = 0

Reorder the terms:
((15ab + 5a2) + -2b * (a + 3b)) = 0
((15ab + 5a2) + -2b * (a + 3b)) = 0
(15ab + 5a2 + (a * -2b + 3b * -2b)) = 0
(15ab + 5a2 + (-2ab + -6b2)) = 0

Reorder the terms:
(15ab + -2ab + 5a2 + -6b2) = 0

Combine like terms: 15ab + -2ab = 13ab
(13ab + 5a2 + -6b2) = 0

Solving
13ab + 5a2 + -6b2 = 0

Solving for variable 'a'.

Factor a trinomial.
(5a + -2b)(a + 3b) = 0


Subproblem 1
Set the factor '(5a + -2b)' equal to zero and attempt to solve:

Simplifying
5a + -2b = 0

Solving
5a + -2b = 0

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

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

Combine like terms: -2b + 2b = 0
5a + 0 = 0 + 2b
5a = 0 + 2b
Remove the zero:
5a = 2b

Divide each side by '5'.
a = 0.4b

Simplifying
a = 0.4b

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

Simplifying
a + 3b = 0

Solving
a + 3b = 0

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

Add '-3b' to each side of the equation.
a + 3b + -3b = 0 + -3b

Combine like terms: 3b + -3b = 0
a + 0 = 0 + -3b
a = 0 + -3b
Remove the zero:
a = -3b

Simplifying
a = -3b
Solution
a = {0.4b, -3b}

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