8p^2-8p-7=0

Simple and best practice solution for 8p^2-8p-7=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 8p^2-8p-7=0 equation:


Simplifying
8p2 + -8p + -7 = 0

Reorder the terms:
-7 + -8p + 8p2 = 0

Solving
-7 + -8p + 8p2 = 0

Solving for variable 'p'.

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

Divide each side by '8'.
-0.875 + -1p + p2 = 0

Move the constant term to the right:

Add '0.875' to each side of the equation.
-0.875 + -1p + 0.875 + p2 = 0 + 0.875

Reorder the terms:
-0.875 + 0.875 + -1p + p2 = 0 + 0.875

Combine like terms: -0.875 + 0.875 = 0.000
0.000 + -1p + p2 = 0 + 0.875
-1p + p2 = 0 + 0.875

Combine like terms: 0 + 0.875 = 0.875
-1p + p2 = 0.875

The p term is -1p.  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.
-1p + 0.25 + p2 = 0.875 + 0.25

Reorder the terms:
0.25 + -1p + p2 = 0.875 + 0.25

Combine like terms: 0.875 + 0.25 = 1.125
0.25 + -1p + p2 = 1.125

Factor a perfect square on the left side:
(p + -0.5)(p + -0.5) = 1.125

Calculate the square root of the right side: 1.060660172

Break this problem into two subproblems by setting 
(p + -0.5) equal to 1.060660172 and -1.060660172.

Subproblem 1

p + -0.5 = 1.060660172 Simplifying p + -0.5 = 1.060660172 Reorder the terms: -0.5 + p = 1.060660172 Solving -0.5 + p = 1.060660172 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 = 1.060660172 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + p = 1.060660172 + 0.5 p = 1.060660172 + 0.5 Combine like terms: 1.060660172 + 0.5 = 1.560660172 p = 1.560660172 Simplifying p = 1.560660172

Subproblem 2

p + -0.5 = -1.060660172 Simplifying p + -0.5 = -1.060660172 Reorder the terms: -0.5 + p = -1.060660172 Solving -0.5 + p = -1.060660172 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 = -1.060660172 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + p = -1.060660172 + 0.5 p = -1.060660172 + 0.5 Combine like terms: -1.060660172 + 0.5 = -0.560660172 p = -0.560660172 Simplifying p = -0.560660172

Solution

The solution to the problem is based on the solutions from the subproblems. p = {1.560660172, -0.560660172}

See similar equations:

| 5/3;(3,5) | | 13x-6=21x+8 | | .75x+0.5x=1.5 | | -4n^2+8n-4=0 | | 1/3x^2=2x-3 | | 9x^2-42xy+13y^2= | | H=-16t^2+4.9t | | 6x-9+4x+9=180 | | x(x+3)=2x(6-x) | | (5b-10b)+(8d+7d)= | | -5t^2+10t+40=0 | | x^2+y^2+2xy+2x-2y-1=0 | | 5x+8y=364 | | (-4a-1)/(-10a)=(3/8 | | x+5cosx=6 | | 40=8(5+b) | | 177=8x-7 | | 7x+21=47 | | 66x-37-23=49 | | 20y^2=80 | | x-2/3=1/x | | 3[2m-3]=5[m+1] | | 15x-19=56 | | 9x-14=43 | | X/-4=5.2 | | 3c+10d+.5h=0 | | -4*-x/2 | | -3y+16=34 | | 2x+4-x=2x-5 | | 6s-5t=2t+3s | | X/2-6=1 | | 14xy=14 |

Equations solver categories