4p^2=75+8p

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Solution for 4p^2=75+8p equation:


Simplifying
4p2 = 75 + 8p

Solving
4p2 = 75 + 8p

Solving for variable 'p'.

Reorder the terms:
-75 + -8p + 4p2 = 75 + 8p + -75 + -8p

Reorder the terms:
-75 + -8p + 4p2 = 75 + -75 + 8p + -8p

Combine like terms: 75 + -75 = 0
-75 + -8p + 4p2 = 0 + 8p + -8p
-75 + -8p + 4p2 = 8p + -8p

Combine like terms: 8p + -8p = 0
-75 + -8p + 4p2 = 0

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

Divide each side by '4'.
-18.75 + -2p + p2 = 0

Move the constant term to the right:

Add '18.75' to each side of the equation.
-18.75 + -2p + 18.75 + p2 = 0 + 18.75

Reorder the terms:
-18.75 + 18.75 + -2p + p2 = 0 + 18.75

Combine like terms: -18.75 + 18.75 = 0.00
0.00 + -2p + p2 = 0 + 18.75
-2p + p2 = 0 + 18.75

Combine like terms: 0 + 18.75 = 18.75
-2p + p2 = 18.75

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 = 18.75 + 1

Reorder the terms:
1 + -2p + p2 = 18.75 + 1

Combine like terms: 18.75 + 1 = 19.75
1 + -2p + p2 = 19.75

Factor a perfect square on the left side:
(p + -1)(p + -1) = 19.75

Calculate the square root of the right side: 4.444097209

Break this problem into two subproblems by setting 
(p + -1) equal to 4.444097209 and -4.444097209.

Subproblem 1

p + -1 = 4.444097209 Simplifying p + -1 = 4.444097209 Reorder the terms: -1 + p = 4.444097209 Solving -1 + p = 4.444097209 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 = 4.444097209 + 1 Combine like terms: -1 + 1 = 0 0 + p = 4.444097209 + 1 p = 4.444097209 + 1 Combine like terms: 4.444097209 + 1 = 5.444097209 p = 5.444097209 Simplifying p = 5.444097209

Subproblem 2

p + -1 = -4.444097209 Simplifying p + -1 = -4.444097209 Reorder the terms: -1 + p = -4.444097209 Solving -1 + p = -4.444097209 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 = -4.444097209 + 1 Combine like terms: -1 + 1 = 0 0 + p = -4.444097209 + 1 p = -4.444097209 + 1 Combine like terms: -4.444097209 + 1 = -3.444097209 p = -3.444097209 Simplifying p = -3.444097209

Solution

The solution to the problem is based on the solutions from the subproblems. p = {5.444097209, -3.444097209}

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