42-12p+0.6p^2=0

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Solution for 42-12p+0.6p^2=0 equation:


Simplifying
42 + -12p + 0.6p2 = 0

Solving
42 + -12p + 0.6p2 = 0

Solving for variable 'p'.

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

Divide each side by '0.6'.
70 + -20p + p2 = 0

Move the constant term to the right:

Add '-70' to each side of the equation.
70 + -20p + -70 + p2 = 0 + -70

Reorder the terms:
70 + -70 + -20p + p2 = 0 + -70

Combine like terms: 70 + -70 = 0
0 + -20p + p2 = 0 + -70
-20p + p2 = 0 + -70

Combine like terms: 0 + -70 = -70
-20p + p2 = -70

The p term is -20p.  Take half its coefficient (-10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
-20p + 100 + p2 = -70 + 100

Reorder the terms:
100 + -20p + p2 = -70 + 100

Combine like terms: -70 + 100 = 30
100 + -20p + p2 = 30

Factor a perfect square on the left side:
(p + -10)(p + -10) = 30

Calculate the square root of the right side: 5.477225575

Break this problem into two subproblems by setting 
(p + -10) equal to 5.477225575 and -5.477225575.

Subproblem 1

p + -10 = 5.477225575 Simplifying p + -10 = 5.477225575 Reorder the terms: -10 + p = 5.477225575 Solving -10 + p = 5.477225575 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + p = 5.477225575 + 10 Combine like terms: -10 + 10 = 0 0 + p = 5.477225575 + 10 p = 5.477225575 + 10 Combine like terms: 5.477225575 + 10 = 15.477225575 p = 15.477225575 Simplifying p = 15.477225575

Subproblem 2

p + -10 = -5.477225575 Simplifying p + -10 = -5.477225575 Reorder the terms: -10 + p = -5.477225575 Solving -10 + p = -5.477225575 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + p = -5.477225575 + 10 Combine like terms: -10 + 10 = 0 0 + p = -5.477225575 + 10 p = -5.477225575 + 10 Combine like terms: -5.477225575 + 10 = 4.522774425 p = 4.522774425 Simplifying p = 4.522774425

Solution

The solution to the problem is based on the solutions from the subproblems. p = {15.477225575, 4.522774425}

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