p^2+20p=27

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Solution for p^2+20p=27 equation:


Simplifying
p2 + 20p = 27

Reorder the terms:
20p + p2 = 27

Solving
20p + p2 = 27

Solving for variable 'p'.

Reorder the terms:
-27 + 20p + p2 = 27 + -27

Combine like terms: 27 + -27 = 0
-27 + 20p + p2 = 0

Begin completing the square.

Move the constant term to the right:

Add '27' to each side of the equation.
-27 + 20p + 27 + p2 = 0 + 27

Reorder the terms:
-27 + 27 + 20p + p2 = 0 + 27

Combine like terms: -27 + 27 = 0
0 + 20p + p2 = 0 + 27
20p + p2 = 0 + 27

Combine like terms: 0 + 27 = 27
20p + p2 = 27

The p term is 20p.  Take half its coefficient (10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
20p + 100 + p2 = 27 + 100

Reorder the terms:
100 + 20p + p2 = 27 + 100

Combine like terms: 27 + 100 = 127
100 + 20p + p2 = 127

Factor a perfect square on the left side:
(p + 10)(p + 10) = 127

Calculate the square root of the right side: 11.26942767

Break this problem into two subproblems by setting 
(p + 10) equal to 11.26942767 and -11.26942767.

Subproblem 1

p + 10 = 11.26942767 Simplifying p + 10 = 11.26942767 Reorder the terms: 10 + p = 11.26942767 Solving 10 + p = 11.26942767 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + p = 11.26942767 + -10 Combine like terms: 10 + -10 = 0 0 + p = 11.26942767 + -10 p = 11.26942767 + -10 Combine like terms: 11.26942767 + -10 = 1.26942767 p = 1.26942767 Simplifying p = 1.26942767

Subproblem 2

p + 10 = -11.26942767 Simplifying p + 10 = -11.26942767 Reorder the terms: 10 + p = -11.26942767 Solving 10 + p = -11.26942767 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + p = -11.26942767 + -10 Combine like terms: 10 + -10 = 0 0 + p = -11.26942767 + -10 p = -11.26942767 + -10 Combine like terms: -11.26942767 + -10 = -21.26942767 p = -21.26942767 Simplifying p = -21.26942767

Solution

The solution to the problem is based on the solutions from the subproblems. p = {1.26942767, -21.26942767}

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