Key's answer to Zxcvbnm's Junior College 1 H2 Maths question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Key
Key's answer
63 answers (Tutor Details)
1st
If there's no careless mistakes
Jiayang
Jiayang
6 years ago
√x is strictly non-negative for all real x. Answer should just be x>a²