Question

If x+y=12 and xy=27,find the value of x3+y3.

Answer 1

Hey user !!

Here is your answer !!

__________________________________________⭐

By substitution find value of x and y

xy=27

x+y=12

x^3+y^3 =(x+y)^3-3xy (x+y)

x^3+y^3 = (12)^3-3(27)(12)

x^3+y^3 = 1728-972

x^3+y^3 = 756

Hope it is satisfactory :-)

_____________________________________________⭐

Answer 2

Hey! ! !

Mate :-

______________________________________________________________________

Question :-

☆ If x+y=12 and xy=27,find the value of x3+y3.

Solution :-

Given that :-

x + y = 12

xy = 27

To find the value of x*3 + y*3

Put the formula

x*3 + y*3 = (x + y )*3 - 3xy (x + y )

We have :-

x*3 + y*3 = (12)*3 - 3 (27)(12)
= 1728 - 972
=756

______________________________________________________________________

☆ ☆ ☆ Hop its helpful ☆ ☆ ☆

☆ Regards :- ♡♡《 Nitish kr singh 》♡♡