The answers are expressions:
(7b*3)+(7b*c)
21b+7bc
I hope I helped!
Answer:
3yx+3yx^2-3y^2
Step-by-step explanation:
Didn't answer all because I got lazy and I think you should try and do the rest yourself. Did this in 5 mins, try putting more effort into your homework. This is basic mathematics.