If is an operation such that for integers a and b we have
a b = a × b – 2 × a × b + b × b (–a) × b + b × b
then find (i) 4 ( – 3)
(ii) ( – 7) ( – 1)
Also show that 4 ( – 3)
(– 3)
4
and ( – 7) ( – 1)
( – 1)
(– 7)