4a^2+8a=24

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Solution for 4a^2+8a=24 equation:


Simplifying
4a2 + 8a = 24

Reorder the terms:
8a + 4a2 = 24

Solving
8a + 4a2 = 24

Solving for variable 'a'.

Reorder the terms:
-24 + 8a + 4a2 = 24 + -24

Combine like terms: 24 + -24 = 0
-24 + 8a + 4a2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-6 + 2a + a2) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-6 + 2a + a2)' equal to zero and attempt to solve: Simplifying -6 + 2a + a2 = 0 Solving -6 + 2a + a2 = 0 Begin completing the square. Move the constant term to the right: Add '6' to each side of the equation. -6 + 2a + 6 + a2 = 0 + 6 Reorder the terms: -6 + 6 + 2a + a2 = 0 + 6 Combine like terms: -6 + 6 = 0 0 + 2a + a2 = 0 + 6 2a + a2 = 0 + 6 Combine like terms: 0 + 6 = 6 2a + a2 = 6 The a term is 2a. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2a + 1 + a2 = 6 + 1 Reorder the terms: 1 + 2a + a2 = 6 + 1 Combine like terms: 6 + 1 = 7 1 + 2a + a2 = 7 Factor a perfect square on the left side: (a + 1)(a + 1) = 7 Calculate the square root of the right side: 2.645751311 Break this problem into two subproblems by setting (a + 1) equal to 2.645751311 and -2.645751311.

Subproblem 1

a + 1 = 2.645751311 Simplifying a + 1 = 2.645751311 Reorder the terms: 1 + a = 2.645751311 Solving 1 + a = 2.645751311 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + a = 2.645751311 + -1 Combine like terms: 1 + -1 = 0 0 + a = 2.645751311 + -1 a = 2.645751311 + -1 Combine like terms: 2.645751311 + -1 = 1.645751311 a = 1.645751311 Simplifying a = 1.645751311

Subproblem 2

a + 1 = -2.645751311 Simplifying a + 1 = -2.645751311 Reorder the terms: 1 + a = -2.645751311 Solving 1 + a = -2.645751311 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + a = -2.645751311 + -1 Combine like terms: 1 + -1 = 0 0 + a = -2.645751311 + -1 a = -2.645751311 + -1 Combine like terms: -2.645751311 + -1 = -3.645751311 a = -3.645751311 Simplifying a = -3.645751311

Solution

The solution to the problem is based on the solutions from the subproblems. a = {1.645751311, -3.645751311}

Solution

a = {1.645751311, -3.645751311}

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