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Simplifying 9p(p + 1) + 13 = 5(2p + 17) + -8p Reorder the terms: 9p(1 + p) + 13 = 5(2p + 17) + -8p (1 * 9p + p * 9p) + 13 = 5(2p + 17) + -8p (9p + 9p2) + 13 = 5(2p + 17) + -8p Reorder the terms: 13 + 9p + 9p2 = 5(2p + 17) + -8p Reorder the terms: 13 + 9p + 9p2 = 5(17 + 2p) + -8p 13 + 9p + 9p2 = (17 * 5 + 2p * 5) + -8p 13 + 9p + 9p2 = (85 + 10p) + -8p Combine like terms: 10p + -8p = 2p 13 + 9p + 9p2 = 85 + 2p Solving 13 + 9p + 9p2 = 85 + 2p Solving for variable 'p'. Reorder the terms: 13 + -85 + 9p + -2p + 9p2 = 85 + 2p + -85 + -2p Combine like terms: 13 + -85 = -72 -72 + 9p + -2p + 9p2 = 85 + 2p + -85 + -2p Combine like terms: 9p + -2p = 7p -72 + 7p + 9p2 = 85 + 2p + -85 + -2p Reorder the terms: -72 + 7p + 9p2 = 85 + -85 + 2p + -2p Combine like terms: 85 + -85 = 0 -72 + 7p + 9p2 = 0 + 2p + -2p -72 + 7p + 9p2 = 2p + -2p Combine like terms: 2p + -2p = 0 -72 + 7p + 9p2 = 0 Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. -8 + 0.7777777778p + p2 = 0 Move the constant term to the right: Add '8' to each side of the equation. -8 + 0.7777777778p + 8 + p2 = 0 + 8 Reorder the terms: -8 + 8 + 0.7777777778p + p2 = 0 + 8 Combine like terms: -8 + 8 = 0 0 + 0.7777777778p + p2 = 0 + 8 0.7777777778p + p2 = 0 + 8 Combine like terms: 0 + 8 = 8 0.7777777778p + p2 = 8 The p term is 0.7777777778p. Take half its coefficient (0.3888888889). Square it (0.1512345679) and add it to both sides. Add '0.1512345679' to each side of the equation. 0.7777777778p + 0.1512345679 + p2 = 8 + 0.1512345679 Reorder the terms: 0.1512345679 + 0.7777777778p + p2 = 8 + 0.1512345679 Combine like terms: 8 + 0.1512345679 = 8.1512345679 0.1512345679 + 0.7777777778p + p2 = 8.1512345679 Factor a perfect square on the left side: (p + 0.3888888889)(p + 0.3888888889) = 8.1512345679 Calculate the square root of the right side: 2.855036702 Break this problem into two subproblems by setting (p + 0.3888888889) equal to 2.855036702 and -2.855036702.Subproblem 1
p + 0.3888888889 = 2.855036702 Simplifying p + 0.3888888889 = 2.855036702 Reorder the terms: 0.3888888889 + p = 2.855036702 Solving 0.3888888889 + p = 2.855036702 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-0.3888888889' to each side of the equation. 0.3888888889 + -0.3888888889 + p = 2.855036702 + -0.3888888889 Combine like terms: 0.3888888889 + -0.3888888889 = 0.0000000000 0.0000000000 + p = 2.855036702 + -0.3888888889 p = 2.855036702 + -0.3888888889 Combine like terms: 2.855036702 + -0.3888888889 = 2.4661478131 p = 2.4661478131 Simplifying p = 2.4661478131Subproblem 2
p + 0.3888888889 = -2.855036702 Simplifying p + 0.3888888889 = -2.855036702 Reorder the terms: 0.3888888889 + p = -2.855036702 Solving 0.3888888889 + p = -2.855036702 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-0.3888888889' to each side of the equation. 0.3888888889 + -0.3888888889 + p = -2.855036702 + -0.3888888889 Combine like terms: 0.3888888889 + -0.3888888889 = 0.0000000000 0.0000000000 + p = -2.855036702 + -0.3888888889 p = -2.855036702 + -0.3888888889 Combine like terms: -2.855036702 + -0.3888888889 = -3.2439255909 p = -3.2439255909 Simplifying p = -3.2439255909Solution
The solution to the problem is based on the solutions from the subproblems. p = {2.4661478131, -3.2439255909}
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