7p^2+7p=-1

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Solution for 7p^2+7p=-1 equation:


Simplifying
7p2 + 7p = -1

Reorder the terms:
7p + 7p2 = -1

Solving
7p + 7p2 = -1

Solving for variable 'p'.

Reorder the terms:
1 + 7p + 7p2 = -1 + 1

Combine like terms: -1 + 1 = 0
1 + 7p + 7p2 = 0

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

Divide each side by '7'.
0.1428571429 + p + p2 = 0

Move the constant term to the right:

Add '-0.1428571429' to each side of the equation.
0.1428571429 + p + -0.1428571429 + p2 = 0 + -0.1428571429

Reorder the terms:
0.1428571429 + -0.1428571429 + p + p2 = 0 + -0.1428571429

Combine like terms: 0.1428571429 + -0.1428571429 = 0.0000000000
0.0000000000 + p + p2 = 0 + -0.1428571429
p + p2 = 0 + -0.1428571429

Combine like terms: 0 + -0.1428571429 = -0.1428571429
p + p2 = -0.1428571429

The p term is p.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + p2 = -0.1428571429 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + p2 = -0.1428571429 + 0.25

Combine like terms: -0.1428571429 + 0.25 = 0.1071428571
1.25 + p2 = 0.1071428571

Factor a perfect square on the left side:
(p + 0.5)(p + 0.5) = 0.1071428571

Calculate the square root of the right side: 0.327326835

Break this problem into two subproblems by setting 
(p + 0.5) equal to 0.327326835 and -0.327326835.

Subproblem 1

p + 0.5 = 0.327326835 Simplifying p + 0.5 = 0.327326835 Reorder the terms: 0.5 + p = 0.327326835 Solving 0.5 + p = 0.327326835 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + p = 0.327326835 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + p = 0.327326835 + -0.5 p = 0.327326835 + -0.5 Combine like terms: 0.327326835 + -0.5 = -0.172673165 p = -0.172673165 Simplifying p = -0.172673165

Subproblem 2

p + 0.5 = -0.327326835 Simplifying p + 0.5 = -0.327326835 Reorder the terms: 0.5 + p = -0.327326835 Solving 0.5 + p = -0.327326835 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + p = -0.327326835 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + p = -0.327326835 + -0.5 p = -0.327326835 + -0.5 Combine like terms: -0.327326835 + -0.5 = -0.827326835 p = -0.827326835 Simplifying p = -0.827326835

Solution

The solution to the problem is based on the solutions from the subproblems. p = {-0.172673165, -0.827326835}

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