Question 60222
[3+(4b+1)]^2
[3+4b+1]^2
[4b+4]^2
(4b+4)(4b+4) use the FOIL process First*First, Outer*Outer, Inner*Inner, Last*Last
4b*4b+4*4b+4*4b+4*4
16b^2+16b+16b+16
16b^2+32b+16
YOU HAVE THE CORRECT ANSWER.
HOPE THIS HELPS :)