3x2+21x+36=0

Simple and best practice solution for 3x2+21x+36=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 3x2+21x+36=0 equation: 



3x^2+21x+36=0

a = 3; b = 21; c = +36;
Δ = b2-4ac
Δ = 212-4·3·36
Δ = 9
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{9}=3$


$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(21)-3}{2*3}=\frac{-24}{6}
=-4
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(21)+3}{2*3}=\frac{-18}{6}
=-3
$

See similar equations:

| 6(1+8h=) | | B=3x+90 | | 7-d=5 | | 1/2-4x=6x+41/2 | | 14x-23-15x=151 | | 5x+2-3x=9 | | X(7-5y)=6y-1 | | 4(-3x+6)=5(x-2) | | 5x1.2=x | | -2/3x+1/3=4/5 | | w+|-2.8|=4.3 | | 4(p-7)=-8(p+8) | | 12x2-8x+1=0 | | 5/6=1/4x-2/3 | | 25x+3000=13000 | | 3(8j-10)=(7j+5) | | v-12/5=-11/10 | | (1/4)x-5=9 | | 2n+n=3 | | 135h+100=535 | | 51/3=k | | 32x=786 | | 1x-3×-4=9 | | 1/3x+10=x+34/3 | | x-5=1x-9 | | 6x-3x=-2 | | v−15/2=−10/11 | | 4.6x=15.64 | | 3+r-5-4r=6r-8r | | 6x-3xx=-2 | | -156=y+647 | | 33=15-k |

Equations solver categories