7p^2=4-4p

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Solution for 7p^2=4-4p equation:


Simplifying
7p2 = 4 + -4p

Solving
7p2 = 4 + -4p

Solving for variable 'p'.

Reorder the terms:
-4 + 4p + 7p2 = 4 + -4p + -4 + 4p

Reorder the terms:
-4 + 4p + 7p2 = 4 + -4 + -4p + 4p

Combine like terms: 4 + -4 = 0
-4 + 4p + 7p2 = 0 + -4p + 4p
-4 + 4p + 7p2 = -4p + 4p

Combine like terms: -4p + 4p = 0
-4 + 4p + 7p2 = 0

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

Divide each side by '7'.
-0.5714285714 + 0.5714285714p + p2 = 0

Move the constant term to the right:

Add '0.5714285714' to each side of the equation.
-0.5714285714 + 0.5714285714p + 0.5714285714 + p2 = 0 + 0.5714285714

Reorder the terms:
-0.5714285714 + 0.5714285714 + 0.5714285714p + p2 = 0 + 0.5714285714

Combine like terms: -0.5714285714 + 0.5714285714 = 0.0000000000
0.0000000000 + 0.5714285714p + p2 = 0 + 0.5714285714
0.5714285714p + p2 = 0 + 0.5714285714

Combine like terms: 0 + 0.5714285714 = 0.5714285714
0.5714285714p + p2 = 0.5714285714

The p term is 0.5714285714p.  Take half its coefficient (0.2857142857).
Square it (0.08163265305) and add it to both sides.

Add '0.08163265305' to each side of the equation.
0.5714285714p + 0.08163265305 + p2 = 0.5714285714 + 0.08163265305

Reorder the terms:
0.08163265305 + 0.5714285714p + p2 = 0.5714285714 + 0.08163265305

Combine like terms: 0.5714285714 + 0.08163265305 = 0.65306122445
0.08163265305 + 0.5714285714p + p2 = 0.65306122445

Factor a perfect square on the left side:
(p + 0.2857142857)(p + 0.2857142857) = 0.65306122445

Calculate the square root of the right side: 0.808122036

Break this problem into two subproblems by setting 
(p + 0.2857142857) equal to 0.808122036 and -0.808122036.

Subproblem 1

p + 0.2857142857 = 0.808122036 Simplifying p + 0.2857142857 = 0.808122036 Reorder the terms: 0.2857142857 + p = 0.808122036 Solving 0.2857142857 + p = 0.808122036 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-0.2857142857' to each side of the equation. 0.2857142857 + -0.2857142857 + p = 0.808122036 + -0.2857142857 Combine like terms: 0.2857142857 + -0.2857142857 = 0.0000000000 0.0000000000 + p = 0.808122036 + -0.2857142857 p = 0.808122036 + -0.2857142857 Combine like terms: 0.808122036 + -0.2857142857 = 0.5224077503 p = 0.5224077503 Simplifying p = 0.5224077503

Subproblem 2

p + 0.2857142857 = -0.808122036 Simplifying p + 0.2857142857 = -0.808122036 Reorder the terms: 0.2857142857 + p = -0.808122036 Solving 0.2857142857 + p = -0.808122036 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-0.2857142857' to each side of the equation. 0.2857142857 + -0.2857142857 + p = -0.808122036 + -0.2857142857 Combine like terms: 0.2857142857 + -0.2857142857 = 0.0000000000 0.0000000000 + p = -0.808122036 + -0.2857142857 p = -0.808122036 + -0.2857142857 Combine like terms: -0.808122036 + -0.2857142857 = -1.0938363217 p = -1.0938363217 Simplifying p = -1.0938363217

Solution

The solution to the problem is based on the solutions from the subproblems. p = {0.5224077503, -1.0938363217}

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