Need on 2 math questions 13. divide the rational expressions. (7y-1)/(y2-36)÷(1-7y)/(y+6) 2. add or subtract as indicated. write the answer in descending order. (3n^4 + 1) + (–8n^4 + 3) – (–8n^4 + 2) a. –13n^4 + 6 b. 3n^4 + 6 c. 3n^4 + 2 d. 19n^4 – 4

Question 1:

For this case we have the following expression:

We have to:

Rewriting:

We take common factor "-" in the denominator:

Question 2:

For this case we must simplify the following expression:

We eliminate parentheses keeping in mind that:

We add similar terms:

answer: 800

step-by-step explanation: