Answer :
The correct expression is
3a^2 + 4b^2
for a = 2 and b = 3
3*(2)^2 + 4*(3)^2=48
The answer in this case is 48
3a^2 + 4b^2
for a = 2 and b = 3
3*(2)^2 + 4*(3)^2=48
The answer in this case is 48