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Simplifying c2(c2 + -4) = 3c2 + -5 Reorder the terms: c2(-4 + c2) = 3c2 + -5 (-4 * c2 + c2 * c2) = 3c2 + -5 (-4c2 + c4) = 3c2 + -5 Reorder the terms: -4c2 + c4 = -5 + 3c2 Solving -4c2 + c4 = -5 + 3c2 Solving for variable 'c'. Reorder the terms: 5 + -4c2 + -3c2 + c4 = -5 + 3c2 + 5 + -3c2 Combine like terms: -4c2 + -3c2 = -7c2 5 + -7c2 + c4 = -5 + 3c2 + 5 + -3c2 Reorder the terms: 5 + -7c2 + c4 = -5 + 5 + 3c2 + -3c2 Combine like terms: -5 + 5 = 0 5 + -7c2 + c4 = 0 + 3c2 + -3c2 5 + -7c2 + c4 = 3c2 + -3c2 Combine like terms: 3c2 + -3c2 = 0 5 + -7c2 + c4 = 0 Begin completing the square. Move the constant term to the right: Add '-5' to each side of the equation. 5 + -7c2 + -5 + c4 = 0 + -5 Reorder the terms: 5 + -5 + -7c2 + c4 = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -7c2 + c4 = 0 + -5 -7c2 + c4 = 0 + -5 Combine like terms: 0 + -5 = -5 -7c2 + c4 = -5 The c term is -7c2. Take half its coefficient (-3.5). Square it (12.25) and add it to both sides. Add '12.25' to each side of the equation. -7c2 + 12.25 + c4 = -5 + 12.25 Reorder the terms: 12.25 + -7c2 + c4 = -5 + 12.25 Combine like terms: -5 + 12.25 = 7.25 12.25 + -7c2 + c4 = 7.25 Factor a perfect square on the left side: (c2 + -3.5)(c2 + -3.5) = 7.25 Calculate the square root of the right side: 2.692582404 Break this problem into two subproblems by setting (c2 + -3.5) equal to 2.692582404 and -2.692582404.Subproblem 1
c2 + -3.5 = 2.692582404 Simplifying c2 + -3.5 = 2.692582404 Reorder the terms: -3.5 + c2 = 2.692582404 Solving -3.5 + c2 = 2.692582404 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + c2 = 2.692582404 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + c2 = 2.692582404 + 3.5 c2 = 2.692582404 + 3.5 Combine like terms: 2.692582404 + 3.5 = 6.192582404 c2 = 6.192582404 Simplifying c2 = 6.192582404 Take the square root of each side: c = {-2.488489985, 2.488489985}Subproblem 2
c2 + -3.5 = -2.692582404 Simplifying c2 + -3.5 = -2.692582404 Reorder the terms: -3.5 + c2 = -2.692582404 Solving -3.5 + c2 = -2.692582404 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + c2 = -2.692582404 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + c2 = -2.692582404 + 3.5 c2 = -2.692582404 + 3.5 Combine like terms: -2.692582404 + 3.5 = 0.807417596 c2 = 0.807417596 Simplifying c2 = 0.807417596 Take the square root of each side: c = {-0.898564186, 0.898564186}Solution
The solution to the problem is based on the solutions from the subproblems. c = {-2.488489985, 2.488489985, -0.898564186, 0.898564186}
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