Zrobi ktos szybko pls .
![Zrobi Ktos Szybko Pls class=](https://pl-static.z-dn.net/files/d67/dac66732e95ea78cad8b0055ff492a8d.png)
[tex]W(1)=2\\W(1)=1-(a-1)(a+1)+(a+1)^2-3(a-1)-5=1-(a^2-1)+a^2+2a+1-3a+3-5=1-a^2+2+a^2+2a+1-3a+3-5=-a+2\\-a+2=2\\-a=0\\a=0[/tex]