Same question. I just don’t understand how you do “simple algebra” to go from 1-(f(2))^3=0 to f(2)=1. And I don’t get how the to get from the circled red part to -1/3. I get everything else. The lady in the video doesn’t show the whole step-by-step work, all she said is to do simple algebra
![Same question I just dont understand how you do simple algebra to go from 1f230 to f21 And I dont get how the to get from the circled red part to 13 I get every class=](https://us-static.z-dn.net/files/d84/6c3858d4e2f4947e485bcbfe4e8b22e1.png)