2v^2+11v-5=0

Simple and best practice solution for 2v^2+11v-5=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 2v^2+11v-5=0 equation:


Simplifying
2v2 + 11v + -5 = 0

Reorder the terms:
-5 + 11v + 2v2 = 0

Solving
-5 + 11v + 2v2 = 0

Solving for variable 'v'.

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

Divide each side by '2'.
-2.5 + 5.5v + v2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + 5.5v + 2.5 + v2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + 5.5v + v2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + 5.5v + v2 = 0 + 2.5
5.5v + v2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
5.5v + v2 = 2.5

The v term is 5.5v.  Take half its coefficient (2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
5.5v + 7.5625 + v2 = 2.5 + 7.5625

Reorder the terms:
7.5625 + 5.5v + v2 = 2.5 + 7.5625

Combine like terms: 2.5 + 7.5625 = 10.0625
7.5625 + 5.5v + v2 = 10.0625

Factor a perfect square on the left side:
(v + 2.75)(v + 2.75) = 10.0625

Calculate the square root of the right side: 3.172144385

Break this problem into two subproblems by setting 
(v + 2.75) equal to 3.172144385 and -3.172144385.

Subproblem 1

v + 2.75 = 3.172144385 Simplifying v + 2.75 = 3.172144385 Reorder the terms: 2.75 + v = 3.172144385 Solving 2.75 + v = 3.172144385 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-2.75' to each side of the equation. 2.75 + -2.75 + v = 3.172144385 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + v = 3.172144385 + -2.75 v = 3.172144385 + -2.75 Combine like terms: 3.172144385 + -2.75 = 0.422144385 v = 0.422144385 Simplifying v = 0.422144385

Subproblem 2

v + 2.75 = -3.172144385 Simplifying v + 2.75 = -3.172144385 Reorder the terms: 2.75 + v = -3.172144385 Solving 2.75 + v = -3.172144385 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-2.75' to each side of the equation. 2.75 + -2.75 + v = -3.172144385 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + v = -3.172144385 + -2.75 v = -3.172144385 + -2.75 Combine like terms: -3.172144385 + -2.75 = -5.922144385 v = -5.922144385 Simplifying v = -5.922144385

Solution

The solution to the problem is based on the solutions from the subproblems. v = {0.422144385, -5.922144385}

See similar equations:

| C=5/9(50-32) | | 8a-2=3a+5.5 | | 6x-8x+2x= | | 4x+x+(4x+6)+(4x+6)2=166 | | j/2+7=12 | | 200=16x-(3) | | x^2+3*x=97 | | 3/(2r-3)=.6 | | x^2+3x=97 | | 75=9x(7) | | 9(x-5)+4x=-7 | | 20-5x=6y+12 | | 555/x=11 | | -12=12v | | 3x+4+2x+5=24 | | 0.4/25 | | -9x-27=27 | | 2w+8=3+2w | | 1/14-2/7 | | 4x-3/2-3.5 | | x^4+4x^3-10x^2+4x+1=0 | | -2yi=3y | | 2x-1/4=55 | | f(x)=x^2+7x+6 | | 10(x+3)=1x+51 | | 5.1(x-3.6)+4.5=3.1(3.5x-2.6) | | V=0.72*63.6*863 | | 6(3x-5)=6(5y+20) | | x^2+2x-7=13+x | | 1+c=12 | | -4x=-(2+2x) | | X^2+10x+24=x+6x-6 |

Equations solver categories