Eric Nicholas K's answer to Angelina's Secondary 4 A Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Eric Nicholas K
Eric Nicholas K's answer
3833 answers (Tutor Details)
And here is part d, found by comparing powers. Both values of z are accepted.
Angelina
Angelina
2 months ago
Thank you so much!!