0.9p^2-8p+3.3=2

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Solution for 0.9p^2-8p+3.3=2 equation:


Simplifying
0.9p2 + -8p + 3.3 = 2

Reorder the terms:
3.3 + -8p + 0.9p2 = 2

Solving
3.3 + -8p + 0.9p2 = 2

Solving for variable 'p'.

Reorder the terms:
3.3 + -2 + -8p + 0.9p2 = 2 + -2

Combine like terms: 3.3 + -2 = 1.3
1.3 + -8p + 0.9p2 = 2 + -2

Combine like terms: 2 + -2 = 0
1.3 + -8p + 0.9p2 = 0

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

Divide each side by '0.9'.
1.444444444 + -8.888888889p + p2 = 0

Move the constant term to the right:

Add '-1.444444444' to each side of the equation.
1.444444444 + -8.888888889p + -1.444444444 + p2 = 0 + -1.444444444

Reorder the terms:
1.444444444 + -1.444444444 + -8.888888889p + p2 = 0 + -1.444444444

Combine like terms: 1.444444444 + -1.444444444 = 0.000000000
0.000000000 + -8.888888889p + p2 = 0 + -1.444444444
-8.888888889p + p2 = 0 + -1.444444444

Combine like terms: 0 + -1.444444444 = -1.444444444
-8.888888889p + p2 = -1.444444444

The p term is -8.888888889p.  Take half its coefficient (-4.444444445).
Square it (19.75308642) and add it to both sides.

Add '19.75308642' to each side of the equation.
-8.888888889p + 19.75308642 + p2 = -1.444444444 + 19.75308642

Reorder the terms:
19.75308642 + -8.888888889p + p2 = -1.444444444 + 19.75308642

Combine like terms: -1.444444444 + 19.75308642 = 18.308641976
19.75308642 + -8.888888889p + p2 = 18.308641976

Factor a perfect square on the left side:
(p + -4.444444445)(p + -4.444444445) = 18.308641976

Calculate the square root of the right side: 4.278859892

Break this problem into two subproblems by setting 
(p + -4.444444445) equal to 4.278859892 and -4.278859892.

Subproblem 1

p + -4.444444445 = 4.278859892 Simplifying p + -4.444444445 = 4.278859892 Reorder the terms: -4.444444445 + p = 4.278859892 Solving -4.444444445 + p = 4.278859892 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '4.444444445' to each side of the equation. -4.444444445 + 4.444444445 + p = 4.278859892 + 4.444444445 Combine like terms: -4.444444445 + 4.444444445 = 0.000000000 0.000000000 + p = 4.278859892 + 4.444444445 p = 4.278859892 + 4.444444445 Combine like terms: 4.278859892 + 4.444444445 = 8.723304337 p = 8.723304337 Simplifying p = 8.723304337

Subproblem 2

p + -4.444444445 = -4.278859892 Simplifying p + -4.444444445 = -4.278859892 Reorder the terms: -4.444444445 + p = -4.278859892 Solving -4.444444445 + p = -4.278859892 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '4.444444445' to each side of the equation. -4.444444445 + 4.444444445 + p = -4.278859892 + 4.444444445 Combine like terms: -4.444444445 + 4.444444445 = 0.000000000 0.000000000 + p = -4.278859892 + 4.444444445 p = -4.278859892 + 4.444444445 Combine like terms: -4.278859892 + 4.444444445 = 0.165584553 p = 0.165584553 Simplifying p = 0.165584553

Solution

The solution to the problem is based on the solutions from the subproblems. p = {8.723304337, 0.165584553}

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