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

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


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

Reorder the terms:
3a(-5 + a) + -4a(4a + 6) = 0
(-5 * 3a + a * 3a) + -4a(4a + 6) = 0
(-15a + 3a2) + -4a(4a + 6) = 0

Reorder the terms:
-15a + 3a2 + -4a(6 + 4a) = 0
-15a + 3a2 + (6 * -4a + 4a * -4a) = 0
-15a + 3a2 + (-24a + -16a2) = 0

Reorder the terms:
-15a + -24a + 3a2 + -16a2 = 0

Combine like terms: -15a + -24a = -39a
-39a + 3a2 + -16a2 = 0

Combine like terms: 3a2 + -16a2 = -13a2
-39a + -13a2 = 0

Solving
-39a + -13a2 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '-13a'.
-13a(3 + a) = 0

Ignore the factor -13.

Subproblem 1

Set the factor 'a' equal to zero and attempt to solve: Simplifying a = 0 Solving a = 0 Move all terms containing a to the left, all other terms to the right. Simplifying a = 0

Subproblem 2

Set the factor '(3 + a)' equal to zero and attempt to solve: Simplifying 3 + a = 0 Solving 3 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + a = 0 + -3 Combine like terms: 3 + -3 = 0 0 + a = 0 + -3 a = 0 + -3 Combine like terms: 0 + -3 = -3 a = -3 Simplifying a = -3

Solution

a = {0, -3}

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