v(3v-17)=21

Simple and best practice solution for v(3v-17)=21 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(3v-17)=21 equation:


Simplifying
v(3v + -17) = 21

Reorder the terms:
v(-17 + 3v) = 21
(-17 * v + 3v * v) = 21
(-17v + 3v2) = 21

Solving
-17v + 3v2 = 21

Solving for variable 'v'.

Reorder the terms:
-21 + -17v + 3v2 = 21 + -21

Combine like terms: 21 + -21 = 0
-21 + -17v + 3v2 = 0

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

Divide each side by '3'.
-7 + -5.666666667v + v2 = 0

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + -5.666666667v + 7 + v2 = 0 + 7

Reorder the terms:
-7 + 7 + -5.666666667v + v2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -5.666666667v + v2 = 0 + 7
-5.666666667v + v2 = 0 + 7

Combine like terms: 0 + 7 = 7
-5.666666667v + v2 = 7

The v term is -5.666666667v.  Take half its coefficient (-2.833333334).
Square it (8.027777782) and add it to both sides.

Add '8.027777782' to each side of the equation.
-5.666666667v + 8.027777782 + v2 = 7 + 8.027777782

Reorder the terms:
8.027777782 + -5.666666667v + v2 = 7 + 8.027777782

Combine like terms: 7 + 8.027777782 = 15.027777782
8.027777782 + -5.666666667v + v2 = 15.027777782

Factor a perfect square on the left side:
(v + -2.833333334)(v + -2.833333334) = 15.027777782

Calculate the square root of the right side: 3.876567784

Break this problem into two subproblems by setting 
(v + -2.833333334) equal to 3.876567784 and -3.876567784.

Subproblem 1

v + -2.833333334 = 3.876567784 Simplifying v + -2.833333334 = 3.876567784 Reorder the terms: -2.833333334 + v = 3.876567784 Solving -2.833333334 + v = 3.876567784 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '2.833333334' to each side of the equation. -2.833333334 + 2.833333334 + v = 3.876567784 + 2.833333334 Combine like terms: -2.833333334 + 2.833333334 = 0.000000000 0.000000000 + v = 3.876567784 + 2.833333334 v = 3.876567784 + 2.833333334 Combine like terms: 3.876567784 + 2.833333334 = 6.709901118 v = 6.709901118 Simplifying v = 6.709901118

Subproblem 2

v + -2.833333334 = -3.876567784 Simplifying v + -2.833333334 = -3.876567784 Reorder the terms: -2.833333334 + v = -3.876567784 Solving -2.833333334 + v = -3.876567784 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '2.833333334' to each side of the equation. -2.833333334 + 2.833333334 + v = -3.876567784 + 2.833333334 Combine like terms: -2.833333334 + 2.833333334 = 0.000000000 0.000000000 + v = -3.876567784 + 2.833333334 v = -3.876567784 + 2.833333334 Combine like terms: -3.876567784 + 2.833333334 = -1.04323445 v = -1.04323445 Simplifying v = -1.04323445

Solution

The solution to the problem is based on the solutions from the subproblems. v = {6.709901118, -1.04323445}

See similar equations:

| 1-x=4x-6 | | 2x^2-19+42=0 | | 18=-9x-9x | | y=2x(2)-10x+5 | | 3x-12=2x-23 | | v(3v-23)=-21 | | 7*(6+2)2-9= | | x+25=2x-5 | | h*h+5*h-14=0 | | -15+8x=57 | | 3+3n-1=7n+6-3n | | -15+7x=57 | | h*h+13*h-10=0 | | ln(63)= | | 4j-3=j+9 | | 1/2x-5=-1/4x-8 | | 10x+7=4x-9 | | -9x+9=18 | | 4x(cube)-4x=0 | | 4x-9=10x+7 | | 3(7+2d)= | | v(4v-23)=-21 | | 9x-6y=13 | | 27^1-x=(1/9)^2-x | | 3(y-1)=y+3-2(-3y-4) | | 13+3x=-19 | | 6-(1/3)x^2=-20 | | 6x+12+3x+63=180 | | 6x^2-21=33 | | .1x^2-1.2=8.8 | | Y=x^4+4x^3-6x+10 | | 6x+11+7x+143=180 |

Equations solver categories