p^2+2p=2.25

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Solution for p^2+2p=2.25 equation:


Simplifying
p2 + 2p = 2.25

Reorder the terms:
2p + p2 = 2.25

Solving
2p + p2 = 2.25

Solving for variable 'p'.

Reorder the terms:
-2.25 + 2p + p2 = 2.25 + -2.25

Combine like terms: 2.25 + -2.25 = 0.00
-2.25 + 2p + p2 = 0.00

Begin completing the square.

Move the constant term to the right:

Add '2.25' to each side of the equation.
-2.25 + 2p + 2.25 + p2 = 0.00 + 2.25

Reorder the terms:
-2.25 + 2.25 + 2p + p2 = 0.00 + 2.25

Combine like terms: -2.25 + 2.25 = 0.00
0.00 + 2p + p2 = 0.00 + 2.25
2p + p2 = 0.00 + 2.25

Combine like terms: 0.00 + 2.25 = 2.25
2p + p2 = 2.25

The p term is 2p.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2p + 1 + p2 = 2.25 + 1

Reorder the terms:
1 + 2p + p2 = 2.25 + 1

Combine like terms: 2.25 + 1 = 3.25
1 + 2p + p2 = 3.25

Factor a perfect square on the left side:
(p + 1)(p + 1) = 3.25

Calculate the square root of the right side: 1.802775638

Break this problem into two subproblems by setting 
(p + 1) equal to 1.802775638 and -1.802775638.

Subproblem 1

p + 1 = 1.802775638 Simplifying p + 1 = 1.802775638 Reorder the terms: 1 + p = 1.802775638 Solving 1 + p = 1.802775638 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + p = 1.802775638 + -1 Combine like terms: 1 + -1 = 0 0 + p = 1.802775638 + -1 p = 1.802775638 + -1 Combine like terms: 1.802775638 + -1 = 0.802775638 p = 0.802775638 Simplifying p = 0.802775638

Subproblem 2

p + 1 = -1.802775638 Simplifying p + 1 = -1.802775638 Reorder the terms: 1 + p = -1.802775638 Solving 1 + p = -1.802775638 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + p = -1.802775638 + -1 Combine like terms: 1 + -1 = 0 0 + p = -1.802775638 + -1 p = -1.802775638 + -1 Combine like terms: -1.802775638 + -1 = -2.802775638 p = -2.802775638 Simplifying p = -2.802775638

Solution

The solution to the problem is based on the solutions from the subproblems. p = {0.802775638, -2.802775638}

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