Use the binomial squares pattern to multiply

Question

(9n−16/47z)^2.

I am not very good with the Binomial square method that is needed to be used for this question

Answer 1

I would prefer the following mnemonic:

Square the first, plus twice the first times the second, plus the square of the second.

This mnemonic is essentially the binomial squares pattern, but it is much easier to memorize and remember.