Question

Find the sum of cubes of two numbers whose sum is 14 and difference is 4.​

Answer 1

Answer:

845

Step-by-step explanation:

let the two numbers be x and y

whose Sum is 14, so,

x+y=14 ___(1)

and difference is 4, so

x-y=4 ____(2)

solving (1) and (2), we get

2x= 18

gives x=9

and so y= 5

we now have values of x and y as 9 and 5

cube of 9= 729

cube of 5= 125

hence sum of cubes of two numbers is

= 720+125

=845

Answer 2

Step-by-step explanation:

x+y=14. ---------eq 1

x-y=4. ---------eq 2

add eq 1 +2

2x=18

x=18/2

x=9

9+y=14

y=14-9

y=5

9 cube + 5 cube

729+125

854