Help please :) I would appreciate it if you also provided a explanation it's okay if there is none :))

7x^2 + 7

Step-by-step explanation:

So you collect the "like-terms". 3x^2 is not the same as 7, however, 4x^2 has the same term as 3x^2, so you add those together and then join the 7 in the expression.

Hope that explanation makes sense

Step-by-step explanation:

Because 3x² and 4x² are like terms, they can be added together:

3+4=7

²+²=⁴

Therefore, it will be 7x⁴.

But 7x⁴ and 7 are not like terms. So it is just 7x⁴+7