I’ve been stuck on this khan for hours already can’t seem to figure it out, it’s just adding and subtracting polynomials but it’s supposed to equal a polynomial in standard form :( please help me !!

Step-by-step explanation:

 polynomial is said to be in its standard form, if it is expressed in such a way that the term with the highest degree is placed first, followed by the term which has the next highest degree, and so on. You can observe that in this standard form of a polynomial, the exponents are placed in descending order.

what level of math? also i don't need to be paid if i can you.