(2p+11)(2p-13)=200

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Solution for (2p+11)(2p-13)=200 equation:


Simplifying
(2p + 11)(2p + -13) = 200

Reorder the terms:
(11 + 2p)(2p + -13) = 200

Reorder the terms:
(11 + 2p)(-13 + 2p) = 200

Multiply (11 + 2p) * (-13 + 2p)
(11(-13 + 2p) + 2p * (-13 + 2p)) = 200
((-13 * 11 + 2p * 11) + 2p * (-13 + 2p)) = 200
((-143 + 22p) + 2p * (-13 + 2p)) = 200
(-143 + 22p + (-13 * 2p + 2p * 2p)) = 200
(-143 + 22p + (-26p + 4p2)) = 200

Combine like terms: 22p + -26p = -4p
(-143 + -4p + 4p2) = 200

Solving
-143 + -4p + 4p2 = 200

Solving for variable 'p'.

Reorder the terms:
-143 + -200 + -4p + 4p2 = 200 + -200

Combine like terms: -143 + -200 = -343
-343 + -4p + 4p2 = 200 + -200

Combine like terms: 200 + -200 = 0
-343 + -4p + 4p2 = 0

Begin completing the square.  Divide all terms by
4 the coefficient of the squared term: 

Divide each side by '4'.
-85.75 + -1p + p2 = 0

Move the constant term to the right:

Add '85.75' to each side of the equation.
-85.75 + -1p + 85.75 + p2 = 0 + 85.75

Reorder the terms:
-85.75 + 85.75 + -1p + p2 = 0 + 85.75

Combine like terms: -85.75 + 85.75 = 0.00
0.00 + -1p + p2 = 0 + 85.75
-1p + p2 = 0 + 85.75

Combine like terms: 0 + 85.75 = 85.75
-1p + p2 = 85.75

The p term is -1p.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1p + 0.25 + p2 = 85.75 + 0.25

Reorder the terms:
0.25 + -1p + p2 = 85.75 + 0.25

Combine like terms: 85.75 + 0.25 = 86
0.25 + -1p + p2 = 86

Factor a perfect square on the left side:
(p + -0.5)(p + -0.5) = 86

Calculate the square root of the right side: 9.273618495

Break this problem into two subproblems by setting 
(p + -0.5) equal to 9.273618495 and -9.273618495.

Subproblem 1

p + -0.5 = 9.273618495 Simplifying p + -0.5 = 9.273618495 Reorder the terms: -0.5 + p = 9.273618495 Solving -0.5 + p = 9.273618495 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + p = 9.273618495 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + p = 9.273618495 + 0.5 p = 9.273618495 + 0.5 Combine like terms: 9.273618495 + 0.5 = 9.773618495 p = 9.773618495 Simplifying p = 9.773618495

Subproblem 2

p + -0.5 = -9.273618495 Simplifying p + -0.5 = -9.273618495 Reorder the terms: -0.5 + p = -9.273618495 Solving -0.5 + p = -9.273618495 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + p = -9.273618495 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + p = -9.273618495 + 0.5 p = -9.273618495 + 0.5 Combine like terms: -9.273618495 + 0.5 = -8.773618495 p = -8.773618495 Simplifying p = -8.773618495

Solution

The solution to the problem is based on the solutions from the subproblems. p = {9.773618495, -8.773618495}

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