Question

Which polynomial represents the sum below? (3x2 + 3) + (3x2 + x + 4)

Answer 1

Hi there! The answer is C.

$(3 {x}^{2} + 3 ) + (3 {x}^{2} + x+ 4) =$
First we work out the parenthesis, which is easy, because we can just remove them.

$3 {x}^{2} + 3 + 3 {x}^{2} + x + 4 =$
Now rearrange our expression (in order to collect the terms later).

$3 {x}^{2} + 3 {x}^{2} + x + 3 + 4 =$
Now we can collect the terms.

$6 {x}^{2} + x + 7$
The answer is C.

~ Hope this helps you!