5p^2+7p-3=0

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Solution for 5p^2+7p-3=0 equation:


Simplifying
5p2 + 7p + -3 = 0

Reorder the terms:
-3 + 7p + 5p2 = 0

Solving
-3 + 7p + 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'.
-0.6 + 1.4p + p2 = 0

Move the constant term to the right:

Add '0.6' to each side of the equation.
-0.6 + 1.4p + 0.6 + p2 = 0 + 0.6

Reorder the terms:
-0.6 + 0.6 + 1.4p + p2 = 0 + 0.6

Combine like terms: -0.6 + 0.6 = 0.0
0.0 + 1.4p + p2 = 0 + 0.6
1.4p + p2 = 0 + 0.6

Combine like terms: 0 + 0.6 = 0.6
1.4p + p2 = 0.6

The p term is 1.4p.  Take half its coefficient (0.7).
Square it (0.49) and add it to both sides.

Add '0.49' to each side of the equation.
1.4p + 0.49 + p2 = 0.6 + 0.49

Reorder the terms:
0.49 + 1.4p + p2 = 0.6 + 0.49

Combine like terms: 0.6 + 0.49 = 1.09
0.49 + 1.4p + p2 = 1.09

Factor a perfect square on the left side:
(p + 0.7)(p + 0.7) = 1.09

Calculate the square root of the right side: 1.044030651

Break this problem into two subproblems by setting 
(p + 0.7) equal to 1.044030651 and -1.044030651.

Subproblem 1

p + 0.7 = 1.044030651 Simplifying p + 0.7 = 1.044030651 Reorder the terms: 0.7 + p = 1.044030651 Solving 0.7 + p = 1.044030651 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-0.7' to each side of the equation. 0.7 + -0.7 + p = 1.044030651 + -0.7 Combine like terms: 0.7 + -0.7 = 0.0 0.0 + p = 1.044030651 + -0.7 p = 1.044030651 + -0.7 Combine like terms: 1.044030651 + -0.7 = 0.344030651 p = 0.344030651 Simplifying p = 0.344030651

Subproblem 2

p + 0.7 = -1.044030651 Simplifying p + 0.7 = -1.044030651 Reorder the terms: 0.7 + p = -1.044030651 Solving 0.7 + p = -1.044030651 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-0.7' to each side of the equation. 0.7 + -0.7 + p = -1.044030651 + -0.7 Combine like terms: 0.7 + -0.7 = 0.0 0.0 + p = -1.044030651 + -0.7 p = -1.044030651 + -0.7 Combine like terms: -1.044030651 + -0.7 = -1.744030651 p = -1.744030651 Simplifying p = -1.744030651

Solution

The solution to the problem is based on the solutions from the subproblems. p = {0.344030651, -1.744030651}

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