I’m confused on how one or both of them must be zero. I feel like I’m goin crazy lol. Any help would be greatly appreciated, thank you!

\begin{aligned}
(a+b)^2 &= a^2+b^2+2ab\\
a^2+b^2+2ab &= a^2+b^2\\
2ab &=0 \\
ab &=0
\end{aligned}

so, either a , b or both a and b must be 0

source:https://courses.lumenlearning.com/wm-developmentalemporium/chapter/5-1-1-greatest-common-factor/

1 Like

I was seeing an amazon receipt earlier instead of the question screenshot and thought I was going crazy

1 Like

hahah yea I attached the wrong screenshot. But if you already scanned the QR code you can just go ahead and do the Amazon return lol

Awesome, thank you. Makes sense now.