Subject :IMO Class : Class 8
The cost of a chocolate is Rs (x + 4) and Rohit bought (x + 4) chocolates. Find the total amount paid by him in terms of x.
Ax2 + 8x + 16
B8x2 + 16x + 12
C6x2 + 2x + 14
D8x2 + x + 16
Ans 1:
Class : Class 9
A
Ans 2:
Class : Class 9
Ans 3:
Class : Class 9
think that you are buying toffees
if you buy 2 toffees of $2 each then your total cost would be 2*$2
=$4
similarly here,
(x+4)*(x+4)
=x^2 + 8x + 16
hence option a