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Simplifying 4(c + -3) * 3(2c + 1) = 7c + 3 Reorder the terms: 4(-3 + c) * 3(2c + 1) = 7c + 3 Reorder the terms: 4(-3 + c) * 3(1 + 2c) = 7c + 3 Reorder the terms for easier multiplication: 4 * 3(-3 + c)(1 + 2c) = 7c + 3 Multiply 4 * 3 12(-3 + c)(1 + 2c) = 7c + 3 Multiply (-3 + c) * (1 + 2c) 12(-3(1 + 2c) + c(1 + 2c)) = 7c + 3 12((1 * -3 + 2c * -3) + c(1 + 2c)) = 7c + 3 12((-3 + -6c) + c(1 + 2c)) = 7c + 3 12(-3 + -6c + (1 * c + 2c * c)) = 7c + 3 12(-3 + -6c + (1c + 2c2)) = 7c + 3 Combine like terms: -6c + 1c = -5c 12(-3 + -5c + 2c2) = 7c + 3 (-3 * 12 + -5c * 12 + 2c2 * 12) = 7c + 3 (-36 + -60c + 24c2) = 7c + 3 Reorder the terms: -36 + -60c + 24c2 = 3 + 7c Solving -36 + -60c + 24c2 = 3 + 7c Solving for variable 'c'. Reorder the terms: -36 + -3 + -60c + -7c + 24c2 = 3 + 7c + -3 + -7c Combine like terms: -36 + -3 = -39 -39 + -60c + -7c + 24c2 = 3 + 7c + -3 + -7c Combine like terms: -60c + -7c = -67c -39 + -67c + 24c2 = 3 + 7c + -3 + -7c Reorder the terms: -39 + -67c + 24c2 = 3 + -3 + 7c + -7c Combine like terms: 3 + -3 = 0 -39 + -67c + 24c2 = 0 + 7c + -7c -39 + -67c + 24c2 = 7c + -7c Combine like terms: 7c + -7c = 0 -39 + -67c + 24c2 = 0 Begin completing the square. Divide all terms by 24 the coefficient of the squared term: Divide each side by '24'. -1.625 + -2.791666667c + c2 = 0 Move the constant term to the right: Add '1.625' to each side of the equation. -1.625 + -2.791666667c + 1.625 + c2 = 0 + 1.625 Reorder the terms: -1.625 + 1.625 + -2.791666667c + c2 = 0 + 1.625 Combine like terms: -1.625 + 1.625 = 0.000 0.000 + -2.791666667c + c2 = 0 + 1.625 -2.791666667c + c2 = 0 + 1.625 Combine like terms: 0 + 1.625 = 1.625 -2.791666667c + c2 = 1.625 The c term is -2.791666667c. Take half its coefficient (-1.395833334). Square it (1.948350696) and add it to both sides. Add '1.948350696' to each side of the equation. -2.791666667c + 1.948350696 + c2 = 1.625 + 1.948350696 Reorder the terms: 1.948350696 + -2.791666667c + c2 = 1.625 + 1.948350696 Combine like terms: 1.625 + 1.948350696 = 3.573350696 1.948350696 + -2.791666667c + c2 = 3.573350696 Factor a perfect square on the left side: (c + -1.395833334)(c + -1.395833334) = 3.573350696 Calculate the square root of the right side: 1.890330843 Break this problem into two subproblems by setting (c + -1.395833334) equal to 1.890330843 and -1.890330843.Subproblem 1
c + -1.395833334 = 1.890330843 Simplifying c + -1.395833334 = 1.890330843 Reorder the terms: -1.395833334 + c = 1.890330843 Solving -1.395833334 + c = 1.890330843 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '1.395833334' to each side of the equation. -1.395833334 + 1.395833334 + c = 1.890330843 + 1.395833334 Combine like terms: -1.395833334 + 1.395833334 = 0.000000000 0.000000000 + c = 1.890330843 + 1.395833334 c = 1.890330843 + 1.395833334 Combine like terms: 1.890330843 + 1.395833334 = 3.286164177 c = 3.286164177 Simplifying c = 3.286164177Subproblem 2
c + -1.395833334 = -1.890330843 Simplifying c + -1.395833334 = -1.890330843 Reorder the terms: -1.395833334 + c = -1.890330843 Solving -1.395833334 + c = -1.890330843 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '1.395833334' to each side of the equation. -1.395833334 + 1.395833334 + c = -1.890330843 + 1.395833334 Combine like terms: -1.395833334 + 1.395833334 = 0.000000000 0.000000000 + c = -1.890330843 + 1.395833334 c = -1.890330843 + 1.395833334 Combine like terms: -1.890330843 + 1.395833334 = -0.494497509 c = -0.494497509 Simplifying c = -0.494497509Solution
The solution to the problem is based on the solutions from the subproblems. c = {3.286164177, -0.494497509}
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