Multiply using one of the rules for the square of a binomial. Assume any variable exponents represent whole numbers.

Question

(11x - y)2

Answer 1

I assume you mean (11x - y)^2
There is no variable exponent. The exponent is 2.

Use the "FOIL" rule
(a + b)^2 = a^2 + 2ab + b^2.

http://www.algebrahelp.com/lessons/simplifying/foilmethod/