3n^2-21/7-n

Simple and best practice solution for 3n^2-21/7-n 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 3n^2-21/7-n equation: 


n in (-oo:+oo)

3*n^2-n-(21/7) = 0

3*n^2-n-3 = 0

3*n^2-n-3 = 0

DELTA = (-1)^2-(-3*3*4)

DELTA = 37

DELTA > 0

n = (37^(1/2)+1)/(2*3) or n = (1-37^(1/2))/(2*3)

n = (37^(1/2)+1)/6 or n = (1-37^(1/2))/6

n in { (1-37^(1/2))/6, (37^(1/2)+1)/6 }

See similar equations:

| 9-7z=12z-10 | | (2x*28)+(-3x-24)=14 | | Z=P+fb | | (x-4)(x^2+6)=146100 | | -2(1/3s-5) | | (3x)/(2x)=4 | | 3x/2x=4 | | -2(1/3s) | | 16y(y+2)=2(7y+8) | | -2(1/3s-5)-2=8 | | 4w-30=-10 | | 5*(4/5) | | -5*4/5 | | -[3-(5-x)]= | | 8z^5(4)= | | 10k^2+27k+5=0 | | -2(-7k-4)+9=13 | | 2x^2-x+53=x^2+10x+25 | | 3y+4=2y-5 | | (4+w)(4w-1)=0 | | 11(7c-1)-4=75c+11 | | 7/2u=28 | | 14=2/9w | | 28+3y-10=13y-14-2y | | -7y^2-8y+8y^2+2y-9= | | A=(20-2x)*(30-2x) | | 3-(x-4)+2x=3(x-1) | | -2(v+4)=-8v-14 | | t=s/tr | | -2x-12=-5(x+6) | | 0=-16t^2+4t+240 | | =0-16t^2+4t+240 |

Equations solver categories