Answer:
(a) The product of the sum of a and b and their difference.
[tex](a+b)\times{(a-b)}\\=a^2-b^2[/tex]
(b) The tripled product of 6a and b².
[tex]3(6a\times{b^2})\\=3(6ab^2)\\=18ab^2[/tex]
(c) The difference of the squares of 2m and 7n.
[tex](2m)^2-(7n)^2\\=4m^2-49n^2[/tex]
