Answer:
- The first one is 6
x^
3 + 6
x^
2 - 36
x
and the second one is 3x^2 + 21x - 54
Answer:
25 bananas.
Step-by-step explanation:
The cost of one banana = 84/15 = rs 28/5 = rs 5.60.
So the number of bananas costing rs 140
= 140 / 5.60
= 25 bananas.
The angle does not matter. Think of it as finding the other side to a triangle. Use

a=39 (line AB)
b=b (the leg we need to find)
c=89 (line BD)


(subtract the 1521 from both sides)

(square root both sides)

b = 80
AD=80