Question

Let * be a binary operation on R defined by a*b = a+b+ab ,where a,b€R;
Then the value of 1*(2*3) is ?

Answer 1

Answer:

23

Step-by-step explanation:

a*b = a+b+ab

1*(2*3) = 1*[ (2+3+(2×3) ]

1*(2*3) = 1*(5+6)

1*(2*3) = 1*11 = 1+11+(1×11)

1*(2*3) = 12+11

1*(2*3) = 23