Question

if 2 X + 3 Y = 12 and xy = 6 find the value of 8 x cube + 27 y cube​

Answer 1

Answer is in pic answer is solved acc to equations formed

Answer 2

Given

2x+3y=12

xy=6

The factors of 6 are ,.... 1,2,3,6

so

we cannot take 1,6

so

we the 2,3

2 into 2 equals 4

3 into 3 equals 9

4 plus 9 is not equal to 12

so

we take it the other way

let x be 3

let y be 2

2 into 3 equals 6

3 into 2 equals 6

6 plus 6 equals 12

xy equals 6

that is 3 into 2 equals 6

now

8x^3 + 27y^3

8*x*x*x+27*y*y*y

216 X 216

46,656

Answer 3

Given

2x+3y=12

xy=6

The factors of 6 are ,.... 1,2,3,6

so

we cannot take 1,6

so

we the 2,3

2 into 2 equals 4

3 into 3 equals 9

4 plus 9 is not equal to 12

so

we take it the other way

let x be 3

let y be 2

2 into 3 equals 6

3 into 2 equals 6

6 plus 6 equals 12

xy equals 6

that is 3 into 2 equals 6

now

8x^3 + 27y^3

8*x*x*x+27*y*y*y

216 X 216

46,656