Question

how change the symbol a^2=4
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Answer 1

Answer:

a²=4

a=+_2

this is your answer

Answer 2

a^2=4

putting root both the sides

√a^2=√4

a½×2=+-2

a=+-2

I think you are thinking that why I have put ½ so for you kind information I will like to say that value of√ is ½.

hope it helps you.

thanks

best of luck for your further studies.

thanks again for giving me the opportunity to help you thank you very much mate.