(p+2)(p-5)=2(p+3)

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Solution for (p+2)(p-5)=2(p+3) equation:


Simplifying
(p + 2)(p + -5) = 2(p + 3)

Reorder the terms:
(2 + p)(p + -5) = 2(p + 3)

Reorder the terms:
(2 + p)(-5 + p) = 2(p + 3)

Multiply (2 + p) * (-5 + p)
(2(-5 + p) + p(-5 + p)) = 2(p + 3)
((-5 * 2 + p * 2) + p(-5 + p)) = 2(p + 3)
((-10 + 2p) + p(-5 + p)) = 2(p + 3)
(-10 + 2p + (-5 * p + p * p)) = 2(p + 3)
(-10 + 2p + (-5p + p2)) = 2(p + 3)

Combine like terms: 2p + -5p = -3p
(-10 + -3p + p2) = 2(p + 3)

Reorder the terms:
-10 + -3p + p2 = 2(3 + p)
-10 + -3p + p2 = (3 * 2 + p * 2)
-10 + -3p + p2 = (6 + 2p)

Solving
-10 + -3p + p2 = 6 + 2p

Solving for variable 'p'.

Reorder the terms:
-10 + -6 + -3p + -2p + p2 = 6 + 2p + -6 + -2p

Combine like terms: -10 + -6 = -16
-16 + -3p + -2p + p2 = 6 + 2p + -6 + -2p

Combine like terms: -3p + -2p = -5p
-16 + -5p + p2 = 6 + 2p + -6 + -2p

Reorder the terms:
-16 + -5p + p2 = 6 + -6 + 2p + -2p

Combine like terms: 6 + -6 = 0
-16 + -5p + p2 = 0 + 2p + -2p
-16 + -5p + p2 = 2p + -2p

Combine like terms: 2p + -2p = 0
-16 + -5p + p2 = 0

Begin completing the square.

Move the constant term to the right:

Add '16' to each side of the equation.
-16 + -5p + 16 + p2 = 0 + 16

Reorder the terms:
-16 + 16 + -5p + p2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + -5p + p2 = 0 + 16
-5p + p2 = 0 + 16

Combine like terms: 0 + 16 = 16
-5p + p2 = 16

The p term is -5p.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5p + 6.25 + p2 = 16 + 6.25

Reorder the terms:
6.25 + -5p + p2 = 16 + 6.25

Combine like terms: 16 + 6.25 = 22.25
6.25 + -5p + p2 = 22.25

Factor a perfect square on the left side:
(p + -2.5)(p + -2.5) = 22.25

Calculate the square root of the right side: 4.716990566

Break this problem into two subproblems by setting 
(p + -2.5) equal to 4.716990566 and -4.716990566.

Subproblem 1

p + -2.5 = 4.716990566 Simplifying p + -2.5 = 4.716990566 Reorder the terms: -2.5 + p = 4.716990566 Solving -2.5 + p = 4.716990566 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + p = 4.716990566 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + p = 4.716990566 + 2.5 p = 4.716990566 + 2.5 Combine like terms: 4.716990566 + 2.5 = 7.216990566 p = 7.216990566 Simplifying p = 7.216990566

Subproblem 2

p + -2.5 = -4.716990566 Simplifying p + -2.5 = -4.716990566 Reorder the terms: -2.5 + p = -4.716990566 Solving -2.5 + p = -4.716990566 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + p = -4.716990566 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + p = -4.716990566 + 2.5 p = -4.716990566 + 2.5 Combine like terms: -4.716990566 + 2.5 = -2.216990566 p = -2.216990566 Simplifying p = -2.216990566

Solution

The solution to the problem is based on the solutions from the subproblems. p = {7.216990566, -2.216990566}

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