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Simplifying p2 + -8p + 21 = 26 Reorder the terms: 21 + -8p + p2 = 26 Solving 21 + -8p + p2 = 26 Solving for variable 'p'. Reorder the terms: 21 + -26 + -8p + p2 = 26 + -26 Combine like terms: 21 + -26 = -5 -5 + -8p + p2 = 26 + -26 Combine like terms: 26 + -26 = 0 -5 + -8p + p2 = 0 Begin completing the square. Move the constant term to the right: Add '5' to each side of the equation. -5 + -8p + 5 + p2 = 0 + 5 Reorder the terms: -5 + 5 + -8p + p2 = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -8p + p2 = 0 + 5 -8p + p2 = 0 + 5 Combine like terms: 0 + 5 = 5 -8p + p2 = 5 The p term is -8p. Take half its coefficient (-4). Square it (16) and add it to both sides. Add '16' to each side of the equation. -8p + 16 + p2 = 5 + 16 Reorder the terms: 16 + -8p + p2 = 5 + 16 Combine like terms: 5 + 16 = 21 16 + -8p + p2 = 21 Factor a perfect square on the left side: (p + -4)(p + -4) = 21 Calculate the square root of the right side: 4.582575695 Break this problem into two subproblems by setting (p + -4) equal to 4.582575695 and -4.582575695.Subproblem 1
p + -4 = 4.582575695 Simplifying p + -4 = 4.582575695 Reorder the terms: -4 + p = 4.582575695 Solving -4 + p = 4.582575695 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + p = 4.582575695 + 4 Combine like terms: -4 + 4 = 0 0 + p = 4.582575695 + 4 p = 4.582575695 + 4 Combine like terms: 4.582575695 + 4 = 8.582575695 p = 8.582575695 Simplifying p = 8.582575695Subproblem 2
p + -4 = -4.582575695 Simplifying p + -4 = -4.582575695 Reorder the terms: -4 + p = -4.582575695 Solving -4 + p = -4.582575695 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + p = -4.582575695 + 4 Combine like terms: -4 + 4 = 0 0 + p = -4.582575695 + 4 p = -4.582575695 + 4 Combine like terms: -4.582575695 + 4 = -0.582575695 p = -0.582575695 Simplifying p = -0.582575695Solution
The solution to the problem is based on the solutions from the subproblems. p = {8.582575695, -0.582575695}
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