Each of the following pairs of terms is the middle term and last term of the product of a perfect square. Write the corresponding perfect square.
a)-6x,9
b)4y,4
c)-8a,16
d)-12,36
...I don't understand how to do these.
a)-6x,9
b)4y,4
c)-8a,16
d)-12,36
...I don't understand how to do these.