5.17p^2-7.47p=9

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Solution for 5.17p^2-7.47p=9 equation:


Simplifying
5.17p2 + -7.47p = 9

Reorder the terms:
-7.47p + 5.17p2 = 9

Solving
-7.47p + 5.17p2 = 9

Solving for variable 'p'.

Reorder the terms:
-9 + -7.47p + 5.17p2 = 9 + -9

Combine like terms: 9 + -9 = 0
-9 + -7.47p + 5.17p2 = 0

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

Divide each side by '5.17'.
-1.740812379 + -1.444874275p + p2 = 0

Move the constant term to the right:

Add '1.740812379' to each side of the equation.
-1.740812379 + -1.444874275p + 1.740812379 + p2 = 0 + 1.740812379

Reorder the terms:
-1.740812379 + 1.740812379 + -1.444874275p + p2 = 0 + 1.740812379

Combine like terms: -1.740812379 + 1.740812379 = 0.000000000
0.000000000 + -1.444874275p + p2 = 0 + 1.740812379
-1.444874275p + p2 = 0 + 1.740812379

Combine like terms: 0 + 1.740812379 = 1.740812379
-1.444874275p + p2 = 1.740812379

The p term is -1.444874275p.  Take half its coefficient (-0.7224371375).
Square it (0.5219154176) and add it to both sides.

Add '0.5219154176' to each side of the equation.
-1.444874275p + 0.5219154176 + p2 = 1.740812379 + 0.5219154176

Reorder the terms:
0.5219154176 + -1.444874275p + p2 = 1.740812379 + 0.5219154176

Combine like terms: 1.740812379 + 0.5219154176 = 2.2627277966
0.5219154176 + -1.444874275p + p2 = 2.2627277966

Factor a perfect square on the left side:
(p + -0.7224371375)(p + -0.7224371375) = 2.2627277966

Calculate the square root of the right side: 1.504236616

Break this problem into two subproblems by setting 
(p + -0.7224371375) equal to 1.504236616 and -1.504236616.

Subproblem 1

p + -0.7224371375 = 1.504236616 Simplifying p + -0.7224371375 = 1.504236616 Reorder the terms: -0.7224371375 + p = 1.504236616 Solving -0.7224371375 + p = 1.504236616 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '0.7224371375' to each side of the equation. -0.7224371375 + 0.7224371375 + p = 1.504236616 + 0.7224371375 Combine like terms: -0.7224371375 + 0.7224371375 = 0.0000000000 0.0000000000 + p = 1.504236616 + 0.7224371375 p = 1.504236616 + 0.7224371375 Combine like terms: 1.504236616 + 0.7224371375 = 2.2266737535 p = 2.2266737535 Simplifying p = 2.2266737535

Subproblem 2

p + -0.7224371375 = -1.504236616 Simplifying p + -0.7224371375 = -1.504236616 Reorder the terms: -0.7224371375 + p = -1.504236616 Solving -0.7224371375 + p = -1.504236616 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '0.7224371375' to each side of the equation. -0.7224371375 + 0.7224371375 + p = -1.504236616 + 0.7224371375 Combine like terms: -0.7224371375 + 0.7224371375 = 0.0000000000 0.0000000000 + p = -1.504236616 + 0.7224371375 p = -1.504236616 + 0.7224371375 Combine like terms: -1.504236616 + 0.7224371375 = -0.7817994785 p = -0.7817994785 Simplifying p = -0.7817994785

Solution

The solution to the problem is based on the solutions from the subproblems. p = {2.2266737535, -0.7817994785}

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