-v(v+7)-3(1-6v)=0

Simple and best practice solution for -v(v+7)-3(1-6v)=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(v+7)-3(1-6v)=0 equation:


Simplifying
-1v(v + 7) + -3(1 + -6v) = 0

Reorder the terms:
-1v(7 + v) + -3(1 + -6v) = 0
(7 * -1v + v * -1v) + -3(1 + -6v) = 0
(-7v + -1v2) + -3(1 + -6v) = 0
-7v + -1v2 + (1 * -3 + -6v * -3) = 0
-7v + -1v2 + (-3 + 18v) = 0

Reorder the terms:
-3 + -7v + 18v + -1v2 = 0

Combine like terms: -7v + 18v = 11v
-3 + 11v + -1v2 = 0

Solving
-3 + 11v + -1v2 = 0

Solving for variable 'v'.

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

Divide each side by '-1'.
3 + -11v + v2 = 0

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -11v + -3 + v2 = 0 + -3

Reorder the terms:
3 + -3 + -11v + v2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -11v + v2 = 0 + -3
-11v + v2 = 0 + -3

Combine like terms: 0 + -3 = -3
-11v + v2 = -3

The v term is -11v.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11v + 30.25 + v2 = -3 + 30.25

Reorder the terms:
30.25 + -11v + v2 = -3 + 30.25

Combine like terms: -3 + 30.25 = 27.25
30.25 + -11v + v2 = 27.25

Factor a perfect square on the left side:
(v + -5.5)(v + -5.5) = 27.25

Calculate the square root of the right side: 5.220153254

Break this problem into two subproblems by setting 
(v + -5.5) equal to 5.220153254 and -5.220153254.

Subproblem 1

v + -5.5 = 5.220153254 Simplifying v + -5.5 = 5.220153254 Reorder the terms: -5.5 + v = 5.220153254 Solving -5.5 + v = 5.220153254 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + v = 5.220153254 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + v = 5.220153254 + 5.5 v = 5.220153254 + 5.5 Combine like terms: 5.220153254 + 5.5 = 10.720153254 v = 10.720153254 Simplifying v = 10.720153254

Subproblem 2

v + -5.5 = -5.220153254 Simplifying v + -5.5 = -5.220153254 Reorder the terms: -5.5 + v = -5.220153254 Solving -5.5 + v = -5.220153254 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + v = -5.220153254 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + v = -5.220153254 + 5.5 v = -5.220153254 + 5.5 Combine like terms: -5.220153254 + 5.5 = 0.279846746 v = 0.279846746 Simplifying v = 0.279846746

Solution

The solution to the problem is based on the solutions from the subproblems. v = {10.720153254, 0.279846746}

See similar equations:

| 3(6r-1)-7(1-3r)=68 | | x+3x+17=133 | | 7x+10+3x-30=180 | | (4/3)w=75 | | -6-3-(-2)= | | 7/4p-2=5 | | 2y+3=-7+5y | | 2-1(1/15) | | -1=5/6 | | 8x-4+2x+4=180 | | 12+8*3+7= | | (3x-7)+(x+5)=180 | | -7(1-3b)+b(8b-6)=0 | | 3p+8p= | | -m/10+2=-4 | | 8-(-4)-(-5)= | | 2x+11+8x-1=180 | | 3n-4n=4 | | x/418 | | 15k^2-40k=80 | | x^2+14x-x^2=0 | | -8(8+4n)+4(-6-6n)=0 | | =x^2+14x-x^2+0 | | 5x-10+2x+22=180 | | 70/15/4 | | (k+2)=28 | | 5x-10=2x+22 | | 0=-×/5 | | 3(6x-1)-3(3x-19)=8x+8 | | -3(d+7)-10=6 | | 8m=m^2+15 | | -8(x-6)+7(-x-6)=0 |

Equations solver categories