.5p^2=4p-8

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Solution for .5p^2=4p-8 equation:


Simplifying
0.5p2 = 4p + -8

Reorder the terms:
0.5p2 = -8 + 4p

Solving
0.5p2 = -8 + 4p

Solving for variable 'p'.

Reorder the terms:
8 + -4p + 0.5p2 = -8 + 4p + 8 + -4p

Reorder the terms:
8 + -4p + 0.5p2 = -8 + 8 + 4p + -4p

Combine like terms: -8 + 8 = 0
8 + -4p + 0.5p2 = 0 + 4p + -4p
8 + -4p + 0.5p2 = 4p + -4p

Combine like terms: 4p + -4p = 0
8 + -4p + 0.5p2 = 0

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

Divide each side by '0.5'.
16 + -8p + p2 = 0

Move the constant term to the right:

Add '-16' to each side of the equation.
16 + -8p + -16 + p2 = 0 + -16

Reorder the terms:
16 + -16 + -8p + p2 = 0 + -16

Combine like terms: 16 + -16 = 0
0 + -8p + p2 = 0 + -16
-8p + p2 = 0 + -16

Combine like terms: 0 + -16 = -16
-8p + p2 = -16

The p term is -8p.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8p + 16 + p2 = -16 + 16

Reorder the terms:
16 + -8p + p2 = -16 + 16

Combine like terms: -16 + 16 = 0
16 + -8p + p2 = 0

Factor a perfect square on the left side:
(p + -4)(p + -4) = 0

Calculate the square root of the right side: 0

Break this problem into two subproblems by setting 
(p + -4) equal to 0 and 0.

Subproblem 1

p + -4 = 0 Simplifying p + -4 = 0 Reorder the terms: -4 + p = 0 Solving -4 + p = 0 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + p = 0 + 4 Combine like terms: -4 + 4 = 0 0 + p = 0 + 4 p = 0 + 4 Combine like terms: 0 + 4 = 4 p = 4 Simplifying p = 4

Subproblem 2

p + -4 = 0 Simplifying p + -4 = 0 Reorder the terms: -4 + p = 0 Solving -4 + p = 0 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + p = 0 + 4 Combine like terms: -4 + 4 = 0 0 + p = 0 + 4 p = 0 + 4 Combine like terms: 0 + 4 = 4 p = 4 Simplifying p = 4

Solution

The solution to the problem is based on the solutions from the subproblems. p = {4, 4}

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