(3a+6)(5a+4)=

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Solution for (3a+6)(5a+4)= equation:


Simplifying
(3a + 6)(5a + 4) = 0

Reorder the terms:
(6 + 3a)(5a + 4) = 0

Reorder the terms:
(6 + 3a)(4 + 5a) = 0

Multiply (6 + 3a) * (4 + 5a)
(6(4 + 5a) + 3a * (4 + 5a)) = 0
((4 * 6 + 5a * 6) + 3a * (4 + 5a)) = 0
((24 + 30a) + 3a * (4 + 5a)) = 0
(24 + 30a + (4 * 3a + 5a * 3a)) = 0
(24 + 30a + (12a + 15a2)) = 0

Combine like terms: 30a + 12a = 42a
(24 + 42a + 15a2) = 0

Solving
24 + 42a + 15a2 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '3'.
3(8 + 14a + 5a2) = 0

Factor a trinomial.
3((2 + a)(4 + 5a)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(2 + a)' equal to zero and attempt to solve: Simplifying 2 + a = 0 Solving 2 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + a = 0 + -2 Combine like terms: 2 + -2 = 0 0 + a = 0 + -2 a = 0 + -2 Combine like terms: 0 + -2 = -2 a = -2 Simplifying a = -2

Subproblem 2

Set the factor '(4 + 5a)' equal to zero and attempt to solve: Simplifying 4 + 5a = 0 Solving 4 + 5a = 0 Move all terms containing a to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 5a = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 5a = 0 + -4 5a = 0 + -4 Combine like terms: 0 + -4 = -4 5a = -4 Divide each side by '5'. a = -0.8 Simplifying a = -0.8

Solution

a = {-2, -0.8}

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