v^2+6v+9=7

Simple and best practice solution for v^2+6v+9=7 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+6v+9=7 equation:


Simplifying
v2 + 6v + 9 = 7

Reorder the terms:
9 + 6v + v2 = 7

Solving
9 + 6v + v2 = 7

Solving for variable 'v'.

Reorder the terms:
9 + -7 + 6v + v2 = 7 + -7

Combine like terms: 9 + -7 = 2
2 + 6v + v2 = 7 + -7

Combine like terms: 7 + -7 = 0
2 + 6v + v2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + 6v + -2 + v2 = 0 + -2

Reorder the terms:
2 + -2 + 6v + v2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 6v + v2 = 0 + -2
6v + v2 = 0 + -2

Combine like terms: 0 + -2 = -2
6v + v2 = -2

The v term is 6v.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6v + 9 + v2 = -2 + 9

Reorder the terms:
9 + 6v + v2 = -2 + 9

Combine like terms: -2 + 9 = 7
9 + 6v + v2 = 7

Factor a perfect square on the left side:
(v + 3)(v + 3) = 7

Calculate the square root of the right side: 2.645751311

Break this problem into two subproblems by setting 
(v + 3) equal to 2.645751311 and -2.645751311.

Subproblem 1

v + 3 = 2.645751311 Simplifying v + 3 = 2.645751311 Reorder the terms: 3 + v = 2.645751311 Solving 3 + v = 2.645751311 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + v = 2.645751311 + -3 Combine like terms: 3 + -3 = 0 0 + v = 2.645751311 + -3 v = 2.645751311 + -3 Combine like terms: 2.645751311 + -3 = -0.354248689 v = -0.354248689 Simplifying v = -0.354248689

Subproblem 2

v + 3 = -2.645751311 Simplifying v + 3 = -2.645751311 Reorder the terms: 3 + v = -2.645751311 Solving 3 + v = -2.645751311 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + v = -2.645751311 + -3 Combine like terms: 3 + -3 = 0 0 + v = -2.645751311 + -3 v = -2.645751311 + -3 Combine like terms: -2.645751311 + -3 = -5.645751311 v = -5.645751311 Simplifying v = -5.645751311

Solution

The solution to the problem is based on the solutions from the subproblems. v = {-0.354248689, -5.645751311}

See similar equations:

| 2(p+1)=7 | | 64=4+30 | | (4x^4)(7z^4)= | | 16=5x-y | | (50+y)(50+y)=16900 | | Z/2.95=-7.38 | | 0=3cos(x)+2sin(x) | | 2x+2y^2=7 | | 5y+2y=6y-2 | | z/6-5=20 | | 4(x-1)=1/2(2x-8) | | 5x+135=90 | | 4(7x+7)-1=28x+27 | | 5x+135=9 | | ax-by=2cz | | 9x-3+7x=39x | | 11=16(2/3) | | .6x-7=x | | 10x-7(-5x+9)=-18 | | 4s^2+85=(3s+2)(3s+2) | | 4x+8(-2x+6)=-24 | | 6(x+3)=3x-4 | | -7(1-x)+x=-(6-6x)+6 | | 4/8y=60 | | 9-(6-8x)=4x+5 | | y-3/4 | | (4xy+3y^2-x)dx+x(x+2y)su=0 | | 10x+17x-6+2=-5x+2-6 | | (X-1)(x+1)=185-x(x+1) | | 0=6x^2+47x | | 1/2(5x-6)=3x-0.5x | | x*13=72 |

Equations solver categories