5v^2+10v-18=-5

Simple and best practice solution for 5v^2+10v-18=-5 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 5v^2+10v-18=-5 equation:


Simplifying
5v2 + 10v + -18 = -5

Reorder the terms:
-18 + 10v + 5v2 = -5

Solving
-18 + 10v + 5v2 = -5

Solving for variable 'v'.

Reorder the terms:
-18 + 5 + 10v + 5v2 = -5 + 5

Combine like terms: -18 + 5 = -13
-13 + 10v + 5v2 = -5 + 5

Combine like terms: -5 + 5 = 0
-13 + 10v + 5v2 = 0

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

Divide each side by '5'.
-2.6 + 2v + v2 = 0

Move the constant term to the right:

Add '2.6' to each side of the equation.
-2.6 + 2v + 2.6 + v2 = 0 + 2.6

Reorder the terms:
-2.6 + 2.6 + 2v + v2 = 0 + 2.6

Combine like terms: -2.6 + 2.6 = 0.0
0.0 + 2v + v2 = 0 + 2.6
2v + v2 = 0 + 2.6

Combine like terms: 0 + 2.6 = 2.6
2v + v2 = 2.6

The v term is 2v.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2v + 1 + v2 = 2.6 + 1

Reorder the terms:
1 + 2v + v2 = 2.6 + 1

Combine like terms: 2.6 + 1 = 3.6
1 + 2v + v2 = 3.6

Factor a perfect square on the left side:
(v + 1)(v + 1) = 3.6

Calculate the square root of the right side: 1.897366596

Break this problem into two subproblems by setting 
(v + 1) equal to 1.897366596 and -1.897366596.

Subproblem 1

v + 1 = 1.897366596 Simplifying v + 1 = 1.897366596 Reorder the terms: 1 + v = 1.897366596 Solving 1 + v = 1.897366596 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + v = 1.897366596 + -1 Combine like terms: 1 + -1 = 0 0 + v = 1.897366596 + -1 v = 1.897366596 + -1 Combine like terms: 1.897366596 + -1 = 0.897366596 v = 0.897366596 Simplifying v = 0.897366596

Subproblem 2

v + 1 = -1.897366596 Simplifying v + 1 = -1.897366596 Reorder the terms: 1 + v = -1.897366596 Solving 1 + v = -1.897366596 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + v = -1.897366596 + -1 Combine like terms: 1 + -1 = 0 0 + v = -1.897366596 + -1 v = -1.897366596 + -1 Combine like terms: -1.897366596 + -1 = -2.897366596 v = -2.897366596 Simplifying v = -2.897366596

Solution

The solution to the problem is based on the solutions from the subproblems. v = {0.897366596, -2.897366596}

See similar equations:

| X(squared)+y(squared)=16 | | 6b-5/3=12b-10/6 | | 119=-x+191 | | 4k^2+16k-31=2 | | 6n=(n+8)*0.5 | | n^2-18n-22=-3 | | X^2+3(x+2)=24 | | 245=-v+22 | | 3(x+5)-(2x-9)=27 | | p^2+14p-19=-4 | | 3n+8=2n-17 | | 74=28-2x | | -56=w/4 | | f/3+9=2 | | v^2-14v+14=-6 | | -17=2x+7(-x+4) | | 12(-14)=-2 | | 2x(x-5)-4(x-5)=0 | | -17=-5u | | 6x-(-8x-6)+2=-20 | | 3x=8t | | 7w-9=-2(w+9) | | a^2-4a-72=5 | | .25w-20=-30 | | 4.2=(x*2.7)+((1-x)*19) | | 4x^4-4x^3=32x^2 | | (4X^2-1)=27 | | 4y-2=11 | | -4(v+4)=2v-28 | | 3(5+2a)=33 | | 6x-15=9(x-3) | | 215=12 |

Equations solver categories