8v^2-3v-61=0

Simple and best practice solution for 8v^2-3v-61=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 8v^2-3v-61=0 equation:


Simplifying
8v2 + -3v + -61 = 0

Reorder the terms:
-61 + -3v + 8v2 = 0

Solving
-61 + -3v + 8v2 = 0

Solving for variable 'v'.

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

Divide each side by '8'.
-7.625 + -0.375v + v2 = 0

Move the constant term to the right:

Add '7.625' to each side of the equation.
-7.625 + -0.375v + 7.625 + v2 = 0 + 7.625

Reorder the terms:
-7.625 + 7.625 + -0.375v + v2 = 0 + 7.625

Combine like terms: -7.625 + 7.625 = 0.000
0.000 + -0.375v + v2 = 0 + 7.625
-0.375v + v2 = 0 + 7.625

Combine like terms: 0 + 7.625 = 7.625
-0.375v + v2 = 7.625

The v term is -0.375v.  Take half its coefficient (-0.1875).
Square it (0.03515625) and add it to both sides.

Add '0.03515625' to each side of the equation.
-0.375v + 0.03515625 + v2 = 7.625 + 0.03515625

Reorder the terms:
0.03515625 + -0.375v + v2 = 7.625 + 0.03515625

Combine like terms: 7.625 + 0.03515625 = 7.66015625
0.03515625 + -0.375v + v2 = 7.66015625

Factor a perfect square on the left side:
(v + -0.1875)(v + -0.1875) = 7.66015625

Calculate the square root of the right side: 2.767698728

Break this problem into two subproblems by setting 
(v + -0.1875) equal to 2.767698728 and -2.767698728.

Subproblem 1

v + -0.1875 = 2.767698728 Simplifying v + -0.1875 = 2.767698728 Reorder the terms: -0.1875 + v = 2.767698728 Solving -0.1875 + v = 2.767698728 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '0.1875' to each side of the equation. -0.1875 + 0.1875 + v = 2.767698728 + 0.1875 Combine like terms: -0.1875 + 0.1875 = 0.0000 0.0000 + v = 2.767698728 + 0.1875 v = 2.767698728 + 0.1875 Combine like terms: 2.767698728 + 0.1875 = 2.955198728 v = 2.955198728 Simplifying v = 2.955198728

Subproblem 2

v + -0.1875 = -2.767698728 Simplifying v + -0.1875 = -2.767698728 Reorder the terms: -0.1875 + v = -2.767698728 Solving -0.1875 + v = -2.767698728 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '0.1875' to each side of the equation. -0.1875 + 0.1875 + v = -2.767698728 + 0.1875 Combine like terms: -0.1875 + 0.1875 = 0.0000 0.0000 + v = -2.767698728 + 0.1875 v = -2.767698728 + 0.1875 Combine like terms: -2.767698728 + 0.1875 = -2.580198728 v = -2.580198728 Simplifying v = -2.580198728

Solution

The solution to the problem is based on the solutions from the subproblems. v = {2.955198728, -2.580198728}

See similar equations:

| 3x^2-15x-50=0 | | 4-x^2=0 | | 15-m=6 | | x-2y=15 | | 14-a=6 | | 6-7x+11=-2(-4x+1) | | 3-j=2 | | 5x^2+18x+19=0 | | x-6(.17x+2)=-12 | | 10-s=6 | | r*(p*q)=(r*p)*q | | 6x+13=47 | | y+5= | | Y=5x^2-18x-35 | | -5x+-5x=-10 | | 28=P-.03 | | 25x^2=15x | | 5n+3=2(n+2)-n | | 20x^2=18x | | 2x^2+16x+82=0 | | 20x^2-21x+4=0 | | 3f=12 | | x+3=25x-45 | | P=2c+2w | | 9x+18=-3(x+2) | | Ax+by= | | 6+4x=-14 | | 36-(x+8)=9x-2 | | 4(x-2)=31.5+x | | 2m+5x-7a-6285743d=9 | | 8x^4+12x^2-20=0 | | 3x-6y=-8 |

Equations solver categories