-4a(a+6)=12

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Solution for -4a(a+6)=12 equation:


Simplifying
-4a(a + 6) = 12

Reorder the terms:
-4a(6 + a) = 12
(6 * -4a + a * -4a) = 12
(-24a + -4a2) = 12

Solving
-24a + -4a2 = 12

Solving for variable 'a'.

Reorder the terms:
-12 + -24a + -4a2 = 12 + -12

Combine like terms: 12 + -12 = 0
-12 + -24a + -4a2 = 0

Factor out the Greatest Common Factor (GCF), '-4'.
-4(3 + 6a + a2) = 0

Ignore the factor -4.

Subproblem 1

Set the factor '(3 + 6a + a2)' equal to zero and attempt to solve: Simplifying 3 + 6a + a2 = 0 Solving 3 + 6a + a2 = 0 Begin completing the square. Move the constant term to the right: Add '-3' to each side of the equation. 3 + 6a + -3 + a2 = 0 + -3 Reorder the terms: 3 + -3 + 6a + a2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 6a + a2 = 0 + -3 6a + a2 = 0 + -3 Combine like terms: 0 + -3 = -3 6a + a2 = -3 The a term is 6a. Take half its coefficient (3). Square it (9) and add it to both sides. Add '9' to each side of the equation. 6a + 9 + a2 = -3 + 9 Reorder the terms: 9 + 6a + a2 = -3 + 9 Combine like terms: -3 + 9 = 6 9 + 6a + a2 = 6 Factor a perfect square on the left side: (a + 3)(a + 3) = 6 Calculate the square root of the right side: 2.449489743 Break this problem into two subproblems by setting (a + 3) equal to 2.449489743 and -2.449489743.

Subproblem 1

a + 3 = 2.449489743 Simplifying a + 3 = 2.449489743 Reorder the terms: 3 + a = 2.449489743 Solving 3 + a = 2.449489743 Solving for variable 'a'. 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 = 2.449489743 + -3 Combine like terms: 3 + -3 = 0 0 + a = 2.449489743 + -3 a = 2.449489743 + -3 Combine like terms: 2.449489743 + -3 = -0.550510257 a = -0.550510257 Simplifying a = -0.550510257

Subproblem 2

a + 3 = -2.449489743 Simplifying a + 3 = -2.449489743 Reorder the terms: 3 + a = -2.449489743 Solving 3 + a = -2.449489743 Solving for variable 'a'. 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 = -2.449489743 + -3 Combine like terms: 3 + -3 = 0 0 + a = -2.449489743 + -3 a = -2.449489743 + -3 Combine like terms: -2.449489743 + -3 = -5.449489743 a = -5.449489743 Simplifying a = -5.449489743

Solution

The solution to the problem is based on the solutions from the subproblems. a = {-0.550510257, -5.449489743}

Solution

a = {-0.550510257, -5.449489743}

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