3(a+4)a=6

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


Simplifying
3(a + 4) * a = 6

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

Reorder the terms for easier multiplication:
3a(4 + a) = 6
(4 * 3a + a * 3a) = 6
(12a + 3a2) = 6

Solving
12a + 3a2 = 6

Solving for variable 'a'.

Reorder the terms:
-6 + 12a + 3a2 = 6 + -6

Combine like terms: 6 + -6 = 0
-6 + 12a + 3a2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-2 + 4a + a2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-2 + 4a + a2)' equal to zero and attempt to solve: Simplifying -2 + 4a + a2 = 0 Solving -2 + 4a + a2 = 0 Begin completing the square. Move the constant term to the right: Add '2' to each side of the equation. -2 + 4a + 2 + a2 = 0 + 2 Reorder the terms: -2 + 2 + 4a + a2 = 0 + 2 Combine like terms: -2 + 2 = 0 0 + 4a + a2 = 0 + 2 4a + a2 = 0 + 2 Combine like terms: 0 + 2 = 2 4a + a2 = 2 The a term is 4a. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4a + 4 + a2 = 2 + 4 Reorder the terms: 4 + 4a + a2 = 2 + 4 Combine like terms: 2 + 4 = 6 4 + 4a + a2 = 6 Factor a perfect square on the left side: (a + 2)(a + 2) = 6 Calculate the square root of the right side: 2.449489743 Break this problem into two subproblems by setting (a + 2) equal to 2.449489743 and -2.449489743.

Subproblem 1

a + 2 = 2.449489743 Simplifying a + 2 = 2.449489743 Reorder the terms: 2 + a = 2.449489743 Solving 2 + a = 2.449489743 Solving for variable 'a'. 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 = 2.449489743 + -2 Combine like terms: 2 + -2 = 0 0 + a = 2.449489743 + -2 a = 2.449489743 + -2 Combine like terms: 2.449489743 + -2 = 0.449489743 a = 0.449489743 Simplifying a = 0.449489743

Subproblem 2

a + 2 = -2.449489743 Simplifying a + 2 = -2.449489743 Reorder the terms: 2 + a = -2.449489743 Solving 2 + a = -2.449489743 Solving for variable 'a'. 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 = -2.449489743 + -2 Combine like terms: 2 + -2 = 0 0 + a = -2.449489743 + -2 a = -2.449489743 + -2 Combine like terms: -2.449489743 + -2 = -4.449489743 a = -4.449489743 Simplifying a = -4.449489743

Solution

The solution to the problem is based on the solutions from the subproblems. a = {0.449489743, -4.449489743}

Solution

a = {0.449489743, -4.449489743}

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