8A+3A(2A)=140

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Solution for 8A+3A(2A)=140 equation:


Simplifying
8A + 3A(2A) = 140

Remove parenthesis around (2A)
8A + 3A * 2A = 140

Reorder the terms for easier multiplication:
8A + 3 * 2A * A = 140

Multiply 3 * 2
8A + 6A * A = 140

Multiply A * A
8A + 6A2 = 140

Solving
8A + 6A2 = 140

Solving for variable 'A'.

Reorder the terms:
-140 + 8A + 6A2 = 140 + -140

Combine like terms: 140 + -140 = 0
-140 + 8A + 6A2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-70 + 4A + 3A2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-70 + 4A + 3A2)' equal to zero and attempt to solve: Simplifying -70 + 4A + 3A2 = 0 Solving -70 + 4A + 3A2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -23.33333333 + 1.333333333A + A2 = 0 Move the constant term to the right: Add '23.33333333' to each side of the equation. -23.33333333 + 1.333333333A + 23.33333333 + A2 = 0 + 23.33333333 Reorder the terms: -23.33333333 + 23.33333333 + 1.333333333A + A2 = 0 + 23.33333333 Combine like terms: -23.33333333 + 23.33333333 = 0.00000000 0.00000000 + 1.333333333A + A2 = 0 + 23.33333333 1.333333333A + A2 = 0 + 23.33333333 Combine like terms: 0 + 23.33333333 = 23.33333333 1.333333333A + A2 = 23.33333333 The A term is 1.333333333A. Take half its coefficient (0.6666666665). Square it (0.4444444442) and add it to both sides. Add '0.4444444442' to each side of the equation. 1.333333333A + 0.4444444442 + A2 = 23.33333333 + 0.4444444442 Reorder the terms: 0.4444444442 + 1.333333333A + A2 = 23.33333333 + 0.4444444442 Combine like terms: 23.33333333 + 0.4444444442 = 23.7777777742 0.4444444442 + 1.333333333A + A2 = 23.7777777742 Factor a perfect square on the left side: (A + 0.6666666665)(A + 0.6666666665) = 23.7777777742 Calculate the square root of the right side: 4.876246279 Break this problem into two subproblems by setting (A + 0.6666666665) equal to 4.876246279 and -4.876246279.

Subproblem 1

A + 0.6666666665 = 4.876246279 Simplifying A + 0.6666666665 = 4.876246279 Reorder the terms: 0.6666666665 + A = 4.876246279 Solving 0.6666666665 + A = 4.876246279 Solving for variable 'A'. Move all terms containing A to the left, all other terms to the right. Add '-0.6666666665' to each side of the equation. 0.6666666665 + -0.6666666665 + A = 4.876246279 + -0.6666666665 Combine like terms: 0.6666666665 + -0.6666666665 = 0.0000000000 0.0000000000 + A = 4.876246279 + -0.6666666665 A = 4.876246279 + -0.6666666665 Combine like terms: 4.876246279 + -0.6666666665 = 4.2095796125 A = 4.2095796125 Simplifying A = 4.2095796125

Subproblem 2

A + 0.6666666665 = -4.876246279 Simplifying A + 0.6666666665 = -4.876246279 Reorder the terms: 0.6666666665 + A = -4.876246279 Solving 0.6666666665 + A = -4.876246279 Solving for variable 'A'. Move all terms containing A to the left, all other terms to the right. Add '-0.6666666665' to each side of the equation. 0.6666666665 + -0.6666666665 + A = -4.876246279 + -0.6666666665 Combine like terms: 0.6666666665 + -0.6666666665 = 0.0000000000 0.0000000000 + A = -4.876246279 + -0.6666666665 A = -4.876246279 + -0.6666666665 Combine like terms: -4.876246279 + -0.6666666665 = -5.5429129455 A = -5.5429129455 Simplifying A = -5.5429129455

Solution

The solution to the problem is based on the solutions from the subproblems. A = {4.2095796125, -5.5429129455}

Solution

A = {4.2095796125, -5.5429129455}

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