Question

f) (–1,2) . (–1,5) =
COM CONTA PFV

Answer 1

F) (–1,2) . (–1,5)
= 1,2 . 1,5
= 12/10 . 15/10 (:5)/(:5)
= 12/10 (:2)/(:2) . 3/2
= 6/5 . 3/2
= 6/2 . 3/5
= 3 . 3/5
= 9/5
= 1,8