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Simplifying a2 + 16a + 49 = 0 Reorder the terms: 49 + 16a + a2 = 0 Solving 49 + 16a + a2 = 0 Solving for variable 'a'. Begin completing the square. Move the constant term to the right: Add '-49' to each side of the equation. 49 + 16a + -49 + a2 = 0 + -49 Reorder the terms: 49 + -49 + 16a + a2 = 0 + -49 Combine like terms: 49 + -49 = 0 0 + 16a + a2 = 0 + -49 16a + a2 = 0 + -49 Combine like terms: 0 + -49 = -49 16a + a2 = -49 The a term is 16a. Take half its coefficient (8). Square it (64) and add it to both sides. Add '64' to each side of the equation. 16a + 64 + a2 = -49 + 64 Reorder the terms: 64 + 16a + a2 = -49 + 64 Combine like terms: -49 + 64 = 15 64 + 16a + a2 = 15 Factor a perfect square on the left side: (a + 8)(a + 8) = 15 Calculate the square root of the right side: 3.872983346 Break this problem into two subproblems by setting (a + 8) equal to 3.872983346 and -3.872983346.Subproblem 1
a + 8 = 3.872983346 Simplifying a + 8 = 3.872983346 Reorder the terms: 8 + a = 3.872983346 Solving 8 + a = 3.872983346 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + a = 3.872983346 + -8 Combine like terms: 8 + -8 = 0 0 + a = 3.872983346 + -8 a = 3.872983346 + -8 Combine like terms: 3.872983346 + -8 = -4.127016654 a = -4.127016654 Simplifying a = -4.127016654Subproblem 2
a + 8 = -3.872983346 Simplifying a + 8 = -3.872983346 Reorder the terms: 8 + a = -3.872983346 Solving 8 + a = -3.872983346 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + a = -3.872983346 + -8 Combine like terms: 8 + -8 = 0 0 + a = -3.872983346 + -8 a = -3.872983346 + -8 Combine like terms: -3.872983346 + -8 = -11.872983346 a = -11.872983346 Simplifying a = -11.872983346Solution
The solution to the problem is based on the solutions from the subproblems. a = {-4.127016654, -11.872983346}
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