21x2+3x-15x2+9=0

Simple and best practice solution for 21x2+3x-15x2+9=0 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 21x2+3x-15x2+9=0 equation: 



21x^2+3x-15x^2+9=0

We add all the numbers together, and all the variables

6x^2+3x+9=0

a = 6; b = 3; c = +9;
Δ = b2-4ac
Δ = 32-4·6·9
Δ = -207
Delta is less than zero, so there is no solution for the equation

See similar equations:

| -3x-9=9x+5 | | √2x+15-6=x | | -8(-8-x)=4/5(x+10) | | 22x^2=23x-39 | | (r-3)+(r+5)=10 | | x-10/100=200000000 | | -10=4c | | 5x^2+96=48 | | 3a-9=65a+2 | | -4((4k+8)-(6k-7))=4(4-k)-7 | | 3b-2=2-3b | | 11x=x^2-8 | | 6t-7=2t+10 | | 6t-7=2t-10 | | 0.2^x=2 | | x-0.10x=200 | | 4(x^2+2)=18 | | j/2+7=5 | | 9x-(2x-13)=55 | | 2x+10+3x-5=80 | | 1.06(1.25)(9-x)=10 | | 5x=-71/2 | | 3(c+1)-5=3c-2 | | 4z@z=7 | | 11/2x+2/3=7/2x | | 3x+4(x-8)-x=3/5(10x-15) | | 2(y-12)=y-9 | | x-8/3+8/3=x/7 | | n/2.5-18=0.6 | | 6/x=2/12 | | 19x+4+8x-2+110=180 | | 4+5y=y |

Equations solver categories