Question

Yadi x2+y2=49 or x-y =3to x3-y3 ka man gyat kro

Answer 1

Answer:

207

Step-by-step explanation:

x^2 + y^2 =49

(x-y)^2 +2xy=49

3^2 +2xy= 49

2xy=49-9

2xy=40

xy =20

Now,

(x-y)^3 = 3^3

x^3 -y^3 - 3xy (x-y) = 27

x^3 - y ^3 - 3 ×20( 3) =27

x^3- y ^3 = 27 + 3×20×3

x^3 - y ^3 = 27 + 180

x^3-y^3=207 Ans