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Simplifying p(p + 4) = 9 Reorder the terms: p(4 + p) = 9 (4 * p + p * p) = 9 (4p + p2) = 9 Solving 4p + p2 = 9 Solving for variable 'p'. Reorder the terms: -9 + 4p + p2 = 9 + -9 Combine like terms: 9 + -9 = 0 -9 + 4p + p2 = 0 Begin completing the square. Move the constant term to the right: Add '9' to each side of the equation. -9 + 4p + 9 + p2 = 0 + 9 Reorder the terms: -9 + 9 + 4p + p2 = 0 + 9 Combine like terms: -9 + 9 = 0 0 + 4p + p2 = 0 + 9 4p + p2 = 0 + 9 Combine like terms: 0 + 9 = 9 4p + p2 = 9 The p term is 4p. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4p + 4 + p2 = 9 + 4 Reorder the terms: 4 + 4p + p2 = 9 + 4 Combine like terms: 9 + 4 = 13 4 + 4p + p2 = 13 Factor a perfect square on the left side: (p + 2)(p + 2) = 13 Calculate the square root of the right side: 3.605551275 Break this problem into two subproblems by setting (p + 2) equal to 3.605551275 and -3.605551275.Subproblem 1
p + 2 = 3.605551275 Simplifying p + 2 = 3.605551275 Reorder the terms: 2 + p = 3.605551275 Solving 2 + p = 3.605551275 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + p = 3.605551275 + -2 Combine like terms: 2 + -2 = 0 0 + p = 3.605551275 + -2 p = 3.605551275 + -2 Combine like terms: 3.605551275 + -2 = 1.605551275 p = 1.605551275 Simplifying p = 1.605551275Subproblem 2
p + 2 = -3.605551275 Simplifying p + 2 = -3.605551275 Reorder the terms: 2 + p = -3.605551275 Solving 2 + p = -3.605551275 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + p = -3.605551275 + -2 Combine like terms: 2 + -2 = 0 0 + p = -3.605551275 + -2 p = -3.605551275 + -2 Combine like terms: -3.605551275 + -2 = -5.605551275 p = -5.605551275 Simplifying p = -5.605551275Solution
The solution to the problem is based on the solutions from the subproblems. p = {1.605551275, -5.605551275}
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