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Simplifying c2 + 8c + 3 = 0 Reorder the terms: 3 + 8c + c2 = 0 Solving 3 + 8c + c2 = 0 Solving for variable 'c'. Begin completing the square. Move the constant term to the right: Add '-3' to each side of the equation. 3 + 8c + -3 + c2 = 0 + -3 Reorder the terms: 3 + -3 + 8c + c2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 8c + c2 = 0 + -3 8c + c2 = 0 + -3 Combine like terms: 0 + -3 = -3 8c + c2 = -3 The c term is 8c. Take half its coefficient (4). Square it (16) and add it to both sides. Add '16' to each side of the equation. 8c + 16 + c2 = -3 + 16 Reorder the terms: 16 + 8c + c2 = -3 + 16 Combine like terms: -3 + 16 = 13 16 + 8c + c2 = 13 Factor a perfect square on the left side: (c + 4)(c + 4) = 13 Calculate the square root of the right side: 3.605551275 Break this problem into two subproblems by setting (c + 4) equal to 3.605551275 and -3.605551275.Subproblem 1
c + 4 = 3.605551275 Simplifying c + 4 = 3.605551275 Reorder the terms: 4 + c = 3.605551275 Solving 4 + c = 3.605551275 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + c = 3.605551275 + -4 Combine like terms: 4 + -4 = 0 0 + c = 3.605551275 + -4 c = 3.605551275 + -4 Combine like terms: 3.605551275 + -4 = -0.394448725 c = -0.394448725 Simplifying c = -0.394448725Subproblem 2
c + 4 = -3.605551275 Simplifying c + 4 = -3.605551275 Reorder the terms: 4 + c = -3.605551275 Solving 4 + c = -3.605551275 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + c = -3.605551275 + -4 Combine like terms: 4 + -4 = 0 0 + c = -3.605551275 + -4 c = -3.605551275 + -4 Combine like terms: -3.605551275 + -4 = -7.605551275 c = -7.605551275 Simplifying c = -7.605551275Solution
The solution to the problem is based on the solutions from the subproblems. c = {-0.394448725, -7.605551275}
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