Question

If x+y= 12 and xy = 27
Find x^3 + y^3

Answer 1

Answer:

8¢

Step-by-step explanation:

Answer 2

Given :-

• x+y = 12
• xy = 27

To Find :-

• x³ + y³

Using (x+y)³ = x³+y³+3xy(x+y)

=> (x+y)³ = x³+y³+3xy(x+y)

Substituting Values Of (x+y) and(xy)........

=> (12)³ = x³+y³+3(27)(12)

=> 1728 = x³+y³+81(12)

=> 1728 = x³+y³+972

=> 1728-972 = x³+y³

=> 756 = x³+y³

Therefore, x³+y³ = 756 Ans.

Hope It Helps You..... :)