Question

if x+y=12.
and
xy=21, find the
value of x^3+y^3​

Answer 1

Answer:

Step-by-step explanation:

given blew  

x+y=12

xy=21

we know that

x3+y3

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

=(12)3+3.21.12

=1728+756

=2484  ans