2p^2+15p=22

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Solution for 2p^2+15p=22 equation:


Simplifying
2p2 + 15p = 22

Reorder the terms:
15p + 2p2 = 22

Solving
15p + 2p2 = 22

Solving for variable 'p'.

Reorder the terms:
-22 + 15p + 2p2 = 22 + -22

Combine like terms: 22 + -22 = 0
-22 + 15p + 2p2 = 0

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

Divide each side by '2'.
-11 + 7.5p + p2 = 0

Move the constant term to the right:

Add '11' to each side of the equation.
-11 + 7.5p + 11 + p2 = 0 + 11

Reorder the terms:
-11 + 11 + 7.5p + p2 = 0 + 11

Combine like terms: -11 + 11 = 0
0 + 7.5p + p2 = 0 + 11
7.5p + p2 = 0 + 11

Combine like terms: 0 + 11 = 11
7.5p + p2 = 11

The p term is 7.5p.  Take half its coefficient (3.75).
Square it (14.0625) and add it to both sides.

Add '14.0625' to each side of the equation.
7.5p + 14.0625 + p2 = 11 + 14.0625

Reorder the terms:
14.0625 + 7.5p + p2 = 11 + 14.0625

Combine like terms: 11 + 14.0625 = 25.0625
14.0625 + 7.5p + p2 = 25.0625

Factor a perfect square on the left side:
(p + 3.75)(p + 3.75) = 25.0625

Calculate the square root of the right side: 5.006246099

Break this problem into two subproblems by setting 
(p + 3.75) equal to 5.006246099 and -5.006246099.

Subproblem 1

p + 3.75 = 5.006246099 Simplifying p + 3.75 = 5.006246099 Reorder the terms: 3.75 + p = 5.006246099 Solving 3.75 + p = 5.006246099 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-3.75' to each side of the equation. 3.75 + -3.75 + p = 5.006246099 + -3.75 Combine like terms: 3.75 + -3.75 = 0.00 0.00 + p = 5.006246099 + -3.75 p = 5.006246099 + -3.75 Combine like terms: 5.006246099 + -3.75 = 1.256246099 p = 1.256246099 Simplifying p = 1.256246099

Subproblem 2

p + 3.75 = -5.006246099 Simplifying p + 3.75 = -5.006246099 Reorder the terms: 3.75 + p = -5.006246099 Solving 3.75 + p = -5.006246099 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-3.75' to each side of the equation. 3.75 + -3.75 + p = -5.006246099 + -3.75 Combine like terms: 3.75 + -3.75 = 0.00 0.00 + p = -5.006246099 + -3.75 p = -5.006246099 + -3.75 Combine like terms: -5.006246099 + -3.75 = -8.756246099 p = -8.756246099 Simplifying p = -8.756246099

Solution

The solution to the problem is based on the solutions from the subproblems. p = {1.256246099, -8.756246099}

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