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Simplifying 13 + -1(2c + 2) = 2(c + 2) * 3c Reorder the terms: 13 + -1(2 + 2c) = 2(c + 2) * 3c 13 + (2 * -1 + 2c * -1) = 2(c + 2) * 3c 13 + (-2 + -2c) = 2(c + 2) * 3c Combine like terms: 13 + -2 = 11 11 + -2c = 2(c + 2) * 3c Reorder the terms: 11 + -2c = 2(2 + c) * 3c Reorder the terms for easier multiplication: 11 + -2c = 2 * 3c(2 + c) Multiply 2 * 3 11 + -2c = 6c(2 + c) 11 + -2c = (2 * 6c + c * 6c) 11 + -2c = (12c + 6c2) Solving 11 + -2c = 12c + 6c2 Solving for variable 'c'. Combine like terms: -2c + -12c = -14c 11 + -14c + -6c2 = 12c + 6c2 + -12c + -6c2 Reorder the terms: 11 + -14c + -6c2 = 12c + -12c + 6c2 + -6c2 Combine like terms: 12c + -12c = 0 11 + -14c + -6c2 = 0 + 6c2 + -6c2 11 + -14c + -6c2 = 6c2 + -6c2 Combine like terms: 6c2 + -6c2 = 0 11 + -14c + -6c2 = 0 Begin completing the square. Divide all terms by -6 the coefficient of the squared term: Divide each side by '-6'. -1.833333333 + 2.333333333c + c2 = 0 Move the constant term to the right: Add '1.833333333' to each side of the equation. -1.833333333 + 2.333333333c + 1.833333333 + c2 = 0 + 1.833333333 Reorder the terms: -1.833333333 + 1.833333333 + 2.333333333c + c2 = 0 + 1.833333333 Combine like terms: -1.833333333 + 1.833333333 = 0.000000000 0.000000000 + 2.333333333c + c2 = 0 + 1.833333333 2.333333333c + c2 = 0 + 1.833333333 Combine like terms: 0 + 1.833333333 = 1.833333333 2.333333333c + c2 = 1.833333333 The c term is 2.333333333c. Take half its coefficient (1.166666667). Square it (1.361111112) and add it to both sides. Add '1.361111112' to each side of the equation. 2.333333333c + 1.361111112 + c2 = 1.833333333 + 1.361111112 Reorder the terms: 1.361111112 + 2.333333333c + c2 = 1.833333333 + 1.361111112 Combine like terms: 1.833333333 + 1.361111112 = 3.194444445 1.361111112 + 2.333333333c + c2 = 3.194444445 Factor a perfect square on the left side: (c + 1.166666667)(c + 1.166666667) = 3.194444445 Calculate the square root of the right side: 1.787300883 Break this problem into two subproblems by setting (c + 1.166666667) equal to 1.787300883 and -1.787300883.Subproblem 1
c + 1.166666667 = 1.787300883 Simplifying c + 1.166666667 = 1.787300883 Reorder the terms: 1.166666667 + c = 1.787300883 Solving 1.166666667 + c = 1.787300883 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-1.166666667' to each side of the equation. 1.166666667 + -1.166666667 + c = 1.787300883 + -1.166666667 Combine like terms: 1.166666667 + -1.166666667 = 0.000000000 0.000000000 + c = 1.787300883 + -1.166666667 c = 1.787300883 + -1.166666667 Combine like terms: 1.787300883 + -1.166666667 = 0.620634216 c = 0.620634216 Simplifying c = 0.620634216Subproblem 2
c + 1.166666667 = -1.787300883 Simplifying c + 1.166666667 = -1.787300883 Reorder the terms: 1.166666667 + c = -1.787300883 Solving 1.166666667 + c = -1.787300883 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-1.166666667' to each side of the equation. 1.166666667 + -1.166666667 + c = -1.787300883 + -1.166666667 Combine like terms: 1.166666667 + -1.166666667 = 0.000000000 0.000000000 + c = -1.787300883 + -1.166666667 c = -1.787300883 + -1.166666667 Combine like terms: -1.787300883 + -1.166666667 = -2.95396755 c = -2.95396755 Simplifying c = -2.95396755Solution
The solution to the problem is based on the solutions from the subproblems. c = {0.620634216, -2.95396755}
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