j^2-9j=0

Simple and best practice solution for j^2-9j=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 j^2-9j=0 equation: 



j^2-9j=0

a = 1; b = -9; c = 0;
Δ = b2-4ac
Δ = -92-4·1·0
Δ = 81
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$j_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$j_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{81}=9$


$j_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-9)-9}{2*1}=\frac{0}{2}
=0
$


$j_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-9)+9}{2*1}=\frac{18}{2}
=9
$

See similar equations:

| -18=y/9 | | 7n-3=8+n | | 1.03(1.25)(5-x)=6 | | 4h+7h=22 | | x÷40=48 | | 23b−7=85 | | 5x=5*0.3 | | 4(5p-1)-7p=-6p+6(p-5) | | -2(a-2)-4(a+1)=8a-6a | | 5^2+x^2=13^2 | | -28+4n=7(n-4)-3n | | 2x+3x+3x^2=22 | | -0.5(2+x)+3.15=2.15-0.5x | | 4(r-2)=50 | | 39+8b=25+b | | 8+2(x-6)=-2+2x-2 | | (X-11)(5x+8)=0 | | -3=5(6n-6) | | 26,875+12.50x=18.75 | | 6x+8=3x+6= | | 5/2(4x-3)=10 | | 5x^2-2x-65=0 | | 5x2+5x-100=0 | | 3=​4g​−5 | | 0.13(y-4)+0.30y=0.03y-0.40 | | 5x^-2x-65=0 | | (-2m+5)(3)= | | 4+5x2+3=29 | | 3x-70=120 | | 10–8r=-10r–10 | | 7(4w+10)/4=4 | | 0.2(3x+1)-0.1x=0.5(x+2)-0.8 |

Equations solver categories