v^2-10v-18=0

Simple and best practice solution for v^2-10v-18=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 v^2-10v-18=0 equation:


Simplifying
v2 + -10v + -18 = 0

Reorder the terms:
-18 + -10v + v2 = 0

Solving
-18 + -10v + v2 = 0

Solving for variable 'v'.

Begin completing the square.

Move the constant term to the right:

Add '18' to each side of the equation.
-18 + -10v + 18 + v2 = 0 + 18

Reorder the terms:
-18 + 18 + -10v + v2 = 0 + 18

Combine like terms: -18 + 18 = 0
0 + -10v + v2 = 0 + 18
-10v + v2 = 0 + 18

Combine like terms: 0 + 18 = 18
-10v + v2 = 18

The v term is -10v.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10v + 25 + v2 = 18 + 25

Reorder the terms:
25 + -10v + v2 = 18 + 25

Combine like terms: 18 + 25 = 43
25 + -10v + v2 = 43

Factor a perfect square on the left side:
(v + -5)(v + -5) = 43

Calculate the square root of the right side: 6.557438524

Break this problem into two subproblems by setting 
(v + -5) equal to 6.557438524 and -6.557438524.

Subproblem 1

v + -5 = 6.557438524 Simplifying v + -5 = 6.557438524 Reorder the terms: -5 + v = 6.557438524 Solving -5 + v = 6.557438524 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + v = 6.557438524 + 5 Combine like terms: -5 + 5 = 0 0 + v = 6.557438524 + 5 v = 6.557438524 + 5 Combine like terms: 6.557438524 + 5 = 11.557438524 v = 11.557438524 Simplifying v = 11.557438524

Subproblem 2

v + -5 = -6.557438524 Simplifying v + -5 = -6.557438524 Reorder the terms: -5 + v = -6.557438524 Solving -5 + v = -6.557438524 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + v = -6.557438524 + 5 Combine like terms: -5 + 5 = 0 0 + v = -6.557438524 + 5 v = -6.557438524 + 5 Combine like terms: -6.557438524 + 5 = -1.557438524 v = -1.557438524 Simplifying v = -1.557438524

Solution

The solution to the problem is based on the solutions from the subproblems. v = {11.557438524, -1.557438524}

See similar equations:

| x^2-24x+96=0 | | 8-(3n-4)=5-4n | | (x-1)(x-2)=4 | | 7.45x-8.81=5.29+947x | | 11x-6y=18 | | 5y^5+135y^2=0 | | 4(4n+6)+6n=134 | | 4(5x+9)=-30+6 | | 2(x-5)=4x+5x+6 | | at^2+bt+c=0fort | | 5z-40=0 | | -7(z+3)=-2(x+3)-5x | | -2(x-3)=4(x+3) | | b^2-6a+15=0 | | 115=5(6n-1) | | 3y^2+2y-75=0 | | 11-3=4x | | 4p-2=-10 | | 0=x^2+15x+11 | | 2.5t+7.5=16.25 | | -5x(3x+14)=6-(3x+4) | | -x=16-4y | | a+5b+3c=0 | | 8w^5+12w^2-10w^3-15=0 | | 5x^3+14x^2-3x= | | -6(-2x+4)=-96 | | 12x-7=5(x+7) | | 2t^2+3t-9=0 | | 3(3y+5)-2y=7 | | 5x+18=2x+36 | | 4y-7=5y-5 | | 4x^2+56x-192=0 |

Equations solver categories