Recall that

There are three cases to consider:
(1) When

, we have

and

, so

(2) When

and

, we get

and

, so

(3) When

, we have

and

, so

So
Answer:
you just need to multiply 84 x 29
Step-by-step explanation:
you just need to multiply 84 x 29
30*85 multiply those to numbers and then multiply 45 120