Latest exam Aptitude Question SOLUTION: Square the binomial (7a+4y)^2 (7a+4y)(7a+4y) F (7a)(7a)=49a^2 O (7a)(4y)= 28ay I (4y)(7a) = 28ay L (4y) (4y) = 16y^2 49a^2+56ay+16y^2