5p^2-13p+7=0

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Solution for 5p^2-13p+7=0 equation:


Simplifying
5p2 + -13p + 7 = 0

Reorder the terms:
7 + -13p + 5p2 = 0

Solving
7 + -13p + 5p2 = 0

Solving for variable 'p'.

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

Divide each side by '5'.
1.4 + -2.6p + p2 = 0

Move the constant term to the right:

Add '-1.4' to each side of the equation.
1.4 + -2.6p + -1.4 + p2 = 0 + -1.4

Reorder the terms:
1.4 + -1.4 + -2.6p + p2 = 0 + -1.4

Combine like terms: 1.4 + -1.4 = 0.0
0.0 + -2.6p + p2 = 0 + -1.4
-2.6p + p2 = 0 + -1.4

Combine like terms: 0 + -1.4 = -1.4
-2.6p + p2 = -1.4

The p term is -2.6p.  Take half its coefficient (-1.3).
Square it (1.69) and add it to both sides.

Add '1.69' to each side of the equation.
-2.6p + 1.69 + p2 = -1.4 + 1.69

Reorder the terms:
1.69 + -2.6p + p2 = -1.4 + 1.69

Combine like terms: -1.4 + 1.69 = 0.29
1.69 + -2.6p + p2 = 0.29

Factor a perfect square on the left side:
(p + -1.3)(p + -1.3) = 0.29

Calculate the square root of the right side: 0.538516481

Break this problem into two subproblems by setting 
(p + -1.3) equal to 0.538516481 and -0.538516481.

Subproblem 1

p + -1.3 = 0.538516481 Simplifying p + -1.3 = 0.538516481 Reorder the terms: -1.3 + p = 0.538516481 Solving -1.3 + p = 0.538516481 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '1.3' to each side of the equation. -1.3 + 1.3 + p = 0.538516481 + 1.3 Combine like terms: -1.3 + 1.3 = 0.0 0.0 + p = 0.538516481 + 1.3 p = 0.538516481 + 1.3 Combine like terms: 0.538516481 + 1.3 = 1.838516481 p = 1.838516481 Simplifying p = 1.838516481

Subproblem 2

p + -1.3 = -0.538516481 Simplifying p + -1.3 = -0.538516481 Reorder the terms: -1.3 + p = -0.538516481 Solving -1.3 + p = -0.538516481 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '1.3' to each side of the equation. -1.3 + 1.3 + p = -0.538516481 + 1.3 Combine like terms: -1.3 + 1.3 = 0.0 0.0 + p = -0.538516481 + 1.3 p = -0.538516481 + 1.3 Combine like terms: -0.538516481 + 1.3 = 0.761483519 p = 0.761483519 Simplifying p = 0.761483519

Solution

The solution to the problem is based on the solutions from the subproblems. p = {1.838516481, 0.761483519}

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