8v^2-2v=19

Simple and best practice solution for 8v^2-2v=19 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^2-2v=19 equation:


Simplifying
8v2 + -2v = 19

Reorder the terms:
-2v + 8v2 = 19

Solving
-2v + 8v2 = 19

Solving for variable 'v'.

Reorder the terms:
-19 + -2v + 8v2 = 19 + -19

Combine like terms: 19 + -19 = 0
-19 + -2v + 8v2 = 0

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

Divide each side by '8'.
-2.375 + -0.25v + v2 = 0

Move the constant term to the right:

Add '2.375' to each side of the equation.
-2.375 + -0.25v + 2.375 + v2 = 0 + 2.375

Reorder the terms:
-2.375 + 2.375 + -0.25v + v2 = 0 + 2.375

Combine like terms: -2.375 + 2.375 = 0.000
0.000 + -0.25v + v2 = 0 + 2.375
-0.25v + v2 = 0 + 2.375

Combine like terms: 0 + 2.375 = 2.375
-0.25v + v2 = 2.375

The v term is -0.25v.  Take half its coefficient (-0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
-0.25v + 0.015625 + v2 = 2.375 + 0.015625

Reorder the terms:
0.015625 + -0.25v + v2 = 2.375 + 0.015625

Combine like terms: 2.375 + 0.015625 = 2.390625
0.015625 + -0.25v + v2 = 2.390625

Factor a perfect square on the left side:
(v + -0.125)(v + -0.125) = 2.390625

Calculate the square root of the right side: 1.54616461

Break this problem into two subproblems by setting 
(v + -0.125) equal to 1.54616461 and -1.54616461.

Subproblem 1

v + -0.125 = 1.54616461 Simplifying v + -0.125 = 1.54616461 Reorder the terms: -0.125 + v = 1.54616461 Solving -0.125 + v = 1.54616461 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + v = 1.54616461 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + v = 1.54616461 + 0.125 v = 1.54616461 + 0.125 Combine like terms: 1.54616461 + 0.125 = 1.67116461 v = 1.67116461 Simplifying v = 1.67116461

Subproblem 2

v + -0.125 = -1.54616461 Simplifying v + -0.125 = -1.54616461 Reorder the terms: -0.125 + v = -1.54616461 Solving -0.125 + v = -1.54616461 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + v = -1.54616461 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + v = -1.54616461 + 0.125 v = -1.54616461 + 0.125 Combine like terms: -1.54616461 + 0.125 = -1.42116461 v = -1.42116461 Simplifying v = -1.42116461

Solution

The solution to the problem is based on the solutions from the subproblems. v = {1.67116461, -1.42116461}

See similar equations:

| 3p^2-8=-49 | | X/4=12/20 | | 4bsquared+8b=0 | | 35b^2-48b+16=0 | | x-y=.6 | | -6+8h=42 | | 21x^4-4=0 | | 3x-5(6y-2x)+5y= | | 8p-24=8+8p | | 9x+1=10x-10 | | 3.5*x=150000 | | 350=(x+20) | | 3=11-x | | 9x+1=1x-10 | | -z/30 | | 16=m-2 | | 8p-32=8+8p | | 116+b=180 | | 3+2w=-11 | | 6n^2-7n=-4 | | 4x+30=9x-5 | | y=85/x | | (6a-18)4a=92 | | w-179=2 | | 3/4x-5=16 | | 5h+17=-32 | | T+3=-2 | | e-(7.8)=-6.7 | | X/210 | | 10x+20=4x-7 | | 12a-2a= | | (2x-6)+(2x+6)= |

Equations solver categories