2v^2+9v+43=v^2+49

Simple and best practice solution for 2v^2+9v+43=v^2+49 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 2v^2+9v+43=v^2+49 equation:


Simplifying
2v2 + 9v + 43 = v2 + 49

Reorder the terms:
43 + 9v + 2v2 = v2 + 49

Reorder the terms:
43 + 9v + 2v2 = 49 + v2

Solving
43 + 9v + 2v2 = 49 + v2

Solving for variable 'v'.

Reorder the terms:
43 + -49 + 9v + 2v2 + -1v2 = 49 + v2 + -49 + -1v2

Combine like terms: 43 + -49 = -6
-6 + 9v + 2v2 + -1v2 = 49 + v2 + -49 + -1v2

Combine like terms: 2v2 + -1v2 = 1v2
-6 + 9v + 1v2 = 49 + v2 + -49 + -1v2

Reorder the terms:
-6 + 9v + 1v2 = 49 + -49 + v2 + -1v2

Combine like terms: 49 + -49 = 0
-6 + 9v + 1v2 = 0 + v2 + -1v2
-6 + 9v + 1v2 = v2 + -1v2

Combine like terms: v2 + -1v2 = 0
-6 + 9v + 1v2 = 0

Begin completing the square.

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + 9v + 6 + v2 = 0 + 6

Reorder the terms:
-6 + 6 + 9v + v2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 9v + v2 = 0 + 6
9v + v2 = 0 + 6

Combine like terms: 0 + 6 = 6
9v + v2 = 6

The v term is 9v.  Take half its coefficient (4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
9v + 20.25 + v2 = 6 + 20.25

Reorder the terms:
20.25 + 9v + v2 = 6 + 20.25

Combine like terms: 6 + 20.25 = 26.25
20.25 + 9v + v2 = 26.25

Factor a perfect square on the left side:
(v + 4.5)(v + 4.5) = 26.25

Calculate the square root of the right side: 5.123475383

Break this problem into two subproblems by setting 
(v + 4.5) equal to 5.123475383 and -5.123475383.

Subproblem 1

v + 4.5 = 5.123475383 Simplifying v + 4.5 = 5.123475383 Reorder the terms: 4.5 + v = 5.123475383 Solving 4.5 + v = 5.123475383 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-4.5' to each side of the equation. 4.5 + -4.5 + v = 5.123475383 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + v = 5.123475383 + -4.5 v = 5.123475383 + -4.5 Combine like terms: 5.123475383 + -4.5 = 0.623475383 v = 0.623475383 Simplifying v = 0.623475383

Subproblem 2

v + 4.5 = -5.123475383 Simplifying v + 4.5 = -5.123475383 Reorder the terms: 4.5 + v = -5.123475383 Solving 4.5 + v = -5.123475383 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-4.5' to each side of the equation. 4.5 + -4.5 + v = -5.123475383 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + v = -5.123475383 + -4.5 v = -5.123475383 + -4.5 Combine like terms: -5.123475383 + -4.5 = -9.623475383 v = -9.623475383 Simplifying v = -9.623475383

Solution

The solution to the problem is based on the solutions from the subproblems. v = {0.623475383, -9.623475383}

See similar equations:

| 20(x+.016)=23x | | 9(x-3)=-2x+94 | | -2x-4(-2+2x)=-20 | | -7x-3*0=21 | | (6x2/5)12 | | -7*0-3y=21 | | 9(x-2)=5x+10 | | 14x+6=19x-8 | | 2y^2+9y=-4 | | 8(y-5)=-2(6+y) | | 5x^2y^5(-7x^9z^7-9y^9+5z^7)= | | X+6=-2x+3 | | -7x-3y=21 | | 2y^2+9=-4 | | 6(x-5)=60 | | 6(t-6)+6t=4(3t+4)-12t | | 7y-7-4y=4y-3 | | -7x*3-0=21 | | -8-4x=-2x-16 | | 5=7x-6 | | 46-5x=8x-6 | | 4x+4y=160 | | 13000+1250X=37750-1000X | | R^2-30=0 | | 32x^4-8x^2=0 | | 2r-8/r=r-4/8 | | -5+15=-12x+10 | | x/4+12=19 | | m/5+4=6.25 | | x-6=48 | | log(118-3x)=2 | | (2x+18)/(x^2+11x+18) |

Equations solver categories