7p^2+16p+2=0

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Solution for 7p^2+16p+2=0 equation:


Simplifying
7p2 + 16p + 2 = 0

Reorder the terms:
2 + 16p + 7p2 = 0

Solving
2 + 16p + 7p2 = 0

Solving for variable 'p'.

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

Divide each side by '7'.
0.2857142857 + 2.285714286p + p2 = 0

Move the constant term to the right:

Add '-0.2857142857' to each side of the equation.
0.2857142857 + 2.285714286p + -0.2857142857 + p2 = 0 + -0.2857142857

Reorder the terms:
0.2857142857 + -0.2857142857 + 2.285714286p + p2 = 0 + -0.2857142857

Combine like terms: 0.2857142857 + -0.2857142857 = 0.0000000000
0.0000000000 + 2.285714286p + p2 = 0 + -0.2857142857
2.285714286p + p2 = 0 + -0.2857142857

Combine like terms: 0 + -0.2857142857 = -0.2857142857
2.285714286p + p2 = -0.2857142857

The p term is 2.285714286p.  Take half its coefficient (1.142857143).
Square it (1.306122449) and add it to both sides.

Add '1.306122449' to each side of the equation.
2.285714286p + 1.306122449 + p2 = -0.2857142857 + 1.306122449

Reorder the terms:
1.306122449 + 2.285714286p + p2 = -0.2857142857 + 1.306122449

Combine like terms: -0.2857142857 + 1.306122449 = 1.0204081633
1.306122449 + 2.285714286p + p2 = 1.0204081633

Factor a perfect square on the left side:
(p + 1.142857143)(p + 1.142857143) = 1.0204081633

Calculate the square root of the right side: 1.010152545

Break this problem into two subproblems by setting 
(p + 1.142857143) equal to 1.010152545 and -1.010152545.

Subproblem 1

p + 1.142857143 = 1.010152545 Simplifying p + 1.142857143 = 1.010152545 Reorder the terms: 1.142857143 + p = 1.010152545 Solving 1.142857143 + p = 1.010152545 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-1.142857143' to each side of the equation. 1.142857143 + -1.142857143 + p = 1.010152545 + -1.142857143 Combine like terms: 1.142857143 + -1.142857143 = 0.000000000 0.000000000 + p = 1.010152545 + -1.142857143 p = 1.010152545 + -1.142857143 Combine like terms: 1.010152545 + -1.142857143 = -0.132704598 p = -0.132704598 Simplifying p = -0.132704598

Subproblem 2

p + 1.142857143 = -1.010152545 Simplifying p + 1.142857143 = -1.010152545 Reorder the terms: 1.142857143 + p = -1.010152545 Solving 1.142857143 + p = -1.010152545 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-1.142857143' to each side of the equation. 1.142857143 + -1.142857143 + p = -1.010152545 + -1.142857143 Combine like terms: 1.142857143 + -1.142857143 = 0.000000000 0.000000000 + p = -1.010152545 + -1.142857143 p = -1.010152545 + -1.142857143 Combine like terms: -1.010152545 + -1.142857143 = -2.153009688 p = -2.153009688 Simplifying p = -2.153009688

Solution

The solution to the problem is based on the solutions from the subproblems. p = {-0.132704598, -2.153009688}

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