Which polynomial represents the sum below? (3x2 + 3) + (3x2 + x + 4) a. 9x2 + x + 7 b. 6x2 + x + 12 c. 6x2 + x + 7 d. 9x2 + x + 12

Hi there! The answer is C.


First we work out the parenthesis, which is easy, because we can just remove them.


Now rearrange our expression (in order to collect the terms later).


Now we can collect the terms.


The answer is C.

~ Hope this helps you!

Element 17 is chlorine it is a group 7 element(halogen) and belongs to period 3 of the periodic table

Idon’t know the answer to this