0=v^2-15v+2

Simple and best practice solution for 0=v^2-15v+2 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 0=v^2-15v+2 equation:


Simplifying
0 = v2 + -15v + 2

Reorder the terms:
0 = 2 + -15v + v2

Solving
0 = 2 + -15v + v2

Solving for variable 'v'.

Combine like terms: 0 + -2 = -2
-2 + 15v + -1v2 = 2 + -15v + v2 + -2 + 15v + -1v2

Reorder the terms:
-2 + 15v + -1v2 = 2 + -2 + -15v + 15v + v2 + -1v2

Combine like terms: 2 + -2 = 0
-2 + 15v + -1v2 = 0 + -15v + 15v + v2 + -1v2
-2 + 15v + -1v2 = -15v + 15v + v2 + -1v2

Combine like terms: -15v + 15v = 0
-2 + 15v + -1v2 = 0 + v2 + -1v2
-2 + 15v + -1v2 = v2 + -1v2

Combine like terms: v2 + -1v2 = 0
-2 + 15v + -1v2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
2 + -15v + v2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -15v + -2 + v2 = 0 + -2

Reorder the terms:
2 + -2 + -15v + v2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -15v + v2 = 0 + -2
-15v + v2 = 0 + -2

Combine like terms: 0 + -2 = -2
-15v + v2 = -2

The v term is -15v.  Take half its coefficient (-7.5).
Square it (56.25) and add it to both sides.

Add '56.25' to each side of the equation.
-15v + 56.25 + v2 = -2 + 56.25

Reorder the terms:
56.25 + -15v + v2 = -2 + 56.25

Combine like terms: -2 + 56.25 = 54.25
56.25 + -15v + v2 = 54.25

Factor a perfect square on the left side:
(v + -7.5)(v + -7.5) = 54.25

Calculate the square root of the right side: 7.365459931

Break this problem into two subproblems by setting 
(v + -7.5) equal to 7.365459931 and -7.365459931.

Subproblem 1

v + -7.5 = 7.365459931 Simplifying v + -7.5 = 7.365459931 Reorder the terms: -7.5 + v = 7.365459931 Solving -7.5 + v = 7.365459931 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + v = 7.365459931 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + v = 7.365459931 + 7.5 v = 7.365459931 + 7.5 Combine like terms: 7.365459931 + 7.5 = 14.865459931 v = 14.865459931 Simplifying v = 14.865459931

Subproblem 2

v + -7.5 = -7.365459931 Simplifying v + -7.5 = -7.365459931 Reorder the terms: -7.5 + v = -7.365459931 Solving -7.5 + v = -7.365459931 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + v = -7.365459931 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + v = -7.365459931 + 7.5 v = -7.365459931 + 7.5 Combine like terms: -7.365459931 + 7.5 = 0.134540069 v = 0.134540069 Simplifying v = 0.134540069

Solution

The solution to the problem is based on the solutions from the subproblems. v = {14.865459931, 0.134540069}

See similar equations:

| 14x^2-17x-6=0 | | 5=3x+5 | | 45x^2+22x-3=0 | | 5(4x-8)=20(x-2) | | 8x-6x-4x=-12 | | A=14ft^2 | | 5=9x | | 2r^2-5r+1=0 | | 5(x+4)=9x | | 3r^2-12=0 | | 9x-(4x-8)=48 | | 3(5-4)=3(y+4) | | x^3+5x^2-12x-36=0 | | .1x=5 | | -4(4d-5)= | | 2(9a+3u-8b)= | | 3k-5t=4s(9k+7t) | | 15=(x-12)/3 | | 4x+150=10x-6 | | 3.4q-2.5-4.5q=2.1q-4.2 | | -15+x=-20 | | 109-6x=12x+17 | | -7x-12=8x+3 | | 4x+8=-34-10x | | 72-2x=8x+18 | | 63x^2-56x^3+14x^4= | | 9p+5=10+8p | | 4[1.5c+6]-2c=-9 | | -x+8=-4x+11 | | -3(x-4)=x-8 | | 3x+15=x+35 | | 3x+34=11x+10 |

Equations solver categories