Question

If x+y =12 and xy= 12, find the value of x3 + y3
plzz help ...

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

Given that,x+y=12 and xy=27

we know that

(x+y)^3= x^3+y^3, 3xy(x+y)

therefore,

12^3 = x^3 + y3+3*27*12

278 = x^3 +y^3 + 97,2

x^3+y^3 =2728-972 = 756

since x^3+y^3=756.

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