[tex]\\ \sf\longmapsto (3/7)2\div (9/7)0[/tex]
- Anything multiplied with 0 gives 0
[tex]\\ \sf\longmapsto (3/7)2\div 0[/tex]
[tex]\\ \sf\longmapsto \infty[/tex]
Now
[tex]\\ \sf\longmapsto \dfrac{b}{a}=\dfrac{1}{\infty}=0[/tex]
[tex]\\ \sf\longmapsto (\dfrac{b}{a})^2=0^2=0[/tex]
