Question

Question 10
Which expression is equivalent to -a .b?
O
-a + b
ob-a
oa.(-b)
(-a)(-6)

Answer 1

Answer:

a.(-b) ( third choice)

explanation:

-a+b - there is no plus sign for -a.b.

not -a+b

(-a)(-6)=6a (-negative sign and -negative sign=+positive sign)