Question

if X + Y is equal to 10 and X Y is equal to 21 find x cube + y cube​

Answer 1

Answer:

f x + y = 12 and xy = 27 then find the value of x3 + y3.

if x + y = 12 and xy = 27 then find the value of x3 + y3.

Answer 2

Answer:

Step-by-step explanation:

X+Y=10

Cubing both sides

(X+Y) cube=10 cube

X cube +Y cube+3xy square +3x square y=1000

x cube+ y cube+ 3xy(x+y)=1000

x cube +y cube +3 x 21 (10) = 1000

x cube + y cube+630 =1000

x cube + y cube = 1000-630

x cube + y cube = 370