ASAP Which set of expressions are not equivalent?

3(3a) + a(3 a) and 3 a2 + 9 a
5(3 x) - 4(3 x) and 3 x
4(3 a) - 2(4 a) and 4 a2
4 x( x) + 3(2 x) and 4 x2 + 6 x

step-by-step explanation:

what are the statements? and what do you mean by "216 2 1 6"?

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

pls mark as brainliest.

just sum

10 + 10 = 20

where's the diagram?

step-by-step explanation: