Question

30. If x + y = 6 and xy = 11, find the value of x^3+y^3
please answer the question fast​

Answer 1

Answer:

Step-by-step explanation:

Given the equation

x+y=5 and xy=6

Find out the value of (x³-y³) is

To proof

As given the equation

put this in the x+y=5  equation

we get

thus

(x -2) (x -3) =0

x=2,x=3

When x=2

put in  x+y=5

y = 3

(x³-y³) = 8 - 27

     = -19

when

x=3

put in  x+y=5

(x³ -y³) = 27-8

       = 19

Hence proved