Question

Which expression represents, twice the difference of two numbers?

a) 2x−y
b) 2(x−y)
c) 2(x+y)
d) 2−x−y

Answer 1

Answer:

the answer is b

let the 2 no.s be x and y

so their difference is (x-y)

Now we have to 2× the no.

i.e. 2×(x-y)= 2(x-y)

so option b is correct