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Simplifying 5p2 + -4p + -4 = 0 Reorder the terms: -4 + -4p + 5p2 = 0 Solving -4 + -4p + 5p2 = 0 Solving for variable 'p'. Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. -0.8 + -0.8p + p2 = 0 Move the constant term to the right: Add '0.8' to each side of the equation. -0.8 + -0.8p + 0.8 + p2 = 0 + 0.8 Reorder the terms: -0.8 + 0.8 + -0.8p + p2 = 0 + 0.8 Combine like terms: -0.8 + 0.8 = 0.0 0.0 + -0.8p + p2 = 0 + 0.8 -0.8p + p2 = 0 + 0.8 Combine like terms: 0 + 0.8 = 0.8 -0.8p + p2 = 0.8 The p term is -0.8p. Take half its coefficient (-0.4). Square it (0.16) and add it to both sides. Add '0.16' to each side of the equation. -0.8p + 0.16 + p2 = 0.8 + 0.16 Reorder the terms: 0.16 + -0.8p + p2 = 0.8 + 0.16 Combine like terms: 0.8 + 0.16 = 0.96 0.16 + -0.8p + p2 = 0.96 Factor a perfect square on the left side: (p + -0.4)(p + -0.4) = 0.96 Calculate the square root of the right side: 0.979795897 Break this problem into two subproblems by setting (p + -0.4) equal to 0.979795897 and -0.979795897.Subproblem 1
p + -0.4 = 0.979795897 Simplifying p + -0.4 = 0.979795897 Reorder the terms: -0.4 + p = 0.979795897 Solving -0.4 + p = 0.979795897 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + p = 0.979795897 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + p = 0.979795897 + 0.4 p = 0.979795897 + 0.4 Combine like terms: 0.979795897 + 0.4 = 1.379795897 p = 1.379795897 Simplifying p = 1.379795897Subproblem 2
p + -0.4 = -0.979795897 Simplifying p + -0.4 = -0.979795897 Reorder the terms: -0.4 + p = -0.979795897 Solving -0.4 + p = -0.979795897 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + p = -0.979795897 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + p = -0.979795897 + 0.4 p = -0.979795897 + 0.4 Combine like terms: -0.979795897 + 0.4 = -0.579795897 p = -0.579795897 Simplifying p = -0.579795897Solution
The solution to the problem is based on the solutions from the subproblems. p = {1.379795897, -0.579795897}
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