21v=8v^2-9

Simple and best practice solution for 21v=8v^2-9 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 21v=8v^2-9 equation:


Simplifying
21v = 8v2 + -9

Reorder the terms:
21v = -9 + 8v2

Solving
21v = -9 + 8v2

Solving for variable 'v'.

Reorder the terms:
9 + 21v + -8v2 = -9 + 8v2 + 9 + -8v2

Reorder the terms:
9 + 21v + -8v2 = -9 + 9 + 8v2 + -8v2

Combine like terms: -9 + 9 = 0
9 + 21v + -8v2 = 0 + 8v2 + -8v2
9 + 21v + -8v2 = 8v2 + -8v2

Combine like terms: 8v2 + -8v2 = 0
9 + 21v + -8v2 = 0

Factor a trinomial.
(3 + -1v)(3 + 8v) = 0

Subproblem 1

Set the factor '(3 + -1v)' equal to zero and attempt to solve: Simplifying 3 + -1v = 0 Solving 3 + -1v = 0 Move all terms containing v to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1v = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1v = 0 + -3 -1v = 0 + -3 Combine like terms: 0 + -3 = -3 -1v = -3 Divide each side by '-1'. v = 3 Simplifying v = 3

Subproblem 2

Set the factor '(3 + 8v)' equal to zero and attempt to solve: Simplifying 3 + 8v = 0 Solving 3 + 8v = 0 Move all terms containing v to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 8v = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 8v = 0 + -3 8v = 0 + -3 Combine like terms: 0 + -3 = -3 8v = -3 Divide each side by '8'. v = -0.375 Simplifying v = -0.375

Solution

v = {3, -0.375}

See similar equations:

| 2(s-2)=6 | | 3y+0.4=4y+0.7 | | 3y+0.44=4y+0.78 | | 5(b+3)=-30 | | 3x^2=9x+84 | | x+5.6=17.2 | | x+5.6=7.2 | | 5(b+3)=-3 | | Z-4=17 | | 16=2(y+7) | | (6x+4)+3=3(bx-9) | | 5a+7=22 | | 2n=15 | | 5a+7= | | 3(x+3)=18 | | 44-6x=3x-24 | | 55-2x=16x+15 | | -x^2+7x+11=0 | | 4(x-3)=12 | | N+18=25 | | 8z^2(5z^2-4z+1)= | | -3(2s-5)-15=-3(5s+0)-4 | | 3+7a-6+6a= | | 13-7x=8x+17 | | 0.50x+0.20(200)=0.25(96) | | (8p^7)(-7p^3)= | | 9-b^2=4 | | 7x^2+31x+12=0 | | 9y+10=8 | | 0.75x-0.5=4 | | -66-(38)= | | 6x+14=-64-7x |

Equations solver categories