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Simplifying a2 + 20a + 46 = 0 Reorder the terms: 46 + 20a + a2 = 0 Solving 46 + 20a + a2 = 0 Solving for variable 'a'. Begin completing the square. Move the constant term to the right: Add '-46' to each side of the equation. 46 + 20a + -46 + a2 = 0 + -46 Reorder the terms: 46 + -46 + 20a + a2 = 0 + -46 Combine like terms: 46 + -46 = 0 0 + 20a + a2 = 0 + -46 20a + a2 = 0 + -46 Combine like terms: 0 + -46 = -46 20a + a2 = -46 The a term is 20a. Take half its coefficient (10). Square it (100) and add it to both sides. Add '100' to each side of the equation. 20a + 100 + a2 = -46 + 100 Reorder the terms: 100 + 20a + a2 = -46 + 100 Combine like terms: -46 + 100 = 54 100 + 20a + a2 = 54 Factor a perfect square on the left side: (a + 10)(a + 10) = 54 Calculate the square root of the right side: 7.348469228 Break this problem into two subproblems by setting (a + 10) equal to 7.348469228 and -7.348469228.Subproblem 1
a + 10 = 7.348469228 Simplifying a + 10 = 7.348469228 Reorder the terms: 10 + a = 7.348469228 Solving 10 + a = 7.348469228 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + a = 7.348469228 + -10 Combine like terms: 10 + -10 = 0 0 + a = 7.348469228 + -10 a = 7.348469228 + -10 Combine like terms: 7.348469228 + -10 = -2.651530772 a = -2.651530772 Simplifying a = -2.651530772Subproblem 2
a + 10 = -7.348469228 Simplifying a + 10 = -7.348469228 Reorder the terms: 10 + a = -7.348469228 Solving 10 + a = -7.348469228 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + a = -7.348469228 + -10 Combine like terms: 10 + -10 = 0 0 + a = -7.348469228 + -10 a = -7.348469228 + -10 Combine like terms: -7.348469228 + -10 = -17.348469228 a = -17.348469228 Simplifying a = -17.348469228Solution
The solution to the problem is based on the solutions from the subproblems. a = {-2.651530772, -17.348469228}
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