Question

If the the sum of two number is 20 and their Product is 9 so their difference- ​

Answer 1

Answer:

The sum of two numbers is 9 and their product is 20. Find the sum of their cubes

(A) 189

(B) 130

(C) 76

(D) 36

Answer 2

Answer:

x²-y²=418

Step-by-step explanation:

Let two number be x and y

Given,x+y=20 and xy=9

Now,x+y=20

Squaring both the sides,

(x-y)²=(20)²

x²+y²-2xy=400

x²+y²-2(9)=400

x²+y²+18=400

x²+y²=400+18

x²+y²= 418