un=n^2+9n-20

Simple and best practice solution for un=n^2+9n-20 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 un=n^2+9n-20 equation: 


Simplifying
un = n2 + 9n + -20

Reorder the terms:
nu = -20 + 9n + n2

Solving
nu = -20 + 9n + n2

Solving for variable 'n'.

Reorder the terms:
20 + -9n + nu + -1n2 = -20 + 9n + n2 + 20 + -9n + -1n2

Reorder the terms:
20 + -9n + nu + -1n2 = -20 + 20 + 9n + -9n + n2 + -1n2

Combine like terms: -20 + 20 = 0
20 + -9n + nu + -1n2 = 0 + 9n + -9n + n2 + -1n2
20 + -9n + nu + -1n2 = 9n + -9n + n2 + -1n2

Combine like terms: 9n + -9n = 0
20 + -9n + nu + -1n2 = 0 + n2 + -1n2
20 + -9n + nu + -1n2 = n2 + -1n2

Combine like terms: n2 + -1n2 = 0
20 + -9n + nu + -1n2 = 0

The solution to this equation could not be determined.

See similar equations:

| 2a+12=-60 | | 19z+(-13z)+(-14z)=88 | | 7z*7z= | | 7x+10=x+120 | | 10-2(m+5)=16 | | 42g-45g+(-93)=-12 | | z*z= | | 13-6x=-38 | | 91v-16v-61v-12v-v=95 | | 16y-24=4y | | 16z-48=4z | | 51=3*3+2*3*h | | X^2+9x-3=5x-7 | | 3x-(x+1)=6m+1 | | 2m+7+3m=-33 | | 6.25y=9 | | 73-x=2x+3 | | 3000=300(10+x) | | [x-2]=-4 | | 2a-38a+43a+(-29a)=66 | | 1.26=2z-8 | | 3000=300x+3000 | | -5.75y=9 | | 3(95-6x)=1x-152 | | 2x+(1-3x)=-7 | | e^3x-1=(e^6)-x | | (0.5x-3)(0.6x+3)=0 | | 27k+(-24k)=24 | | 7x-7=9x-3x | | 5x+7=-7 | | 16.1=5x+5.6 | | (x-3)*(x-2)=q |

Equations solver categories