Question

If x+ y + 2 = 0, then x3 + y3 + 8 = …………..

Answer 1

Answer:

6xy

Step-by-step explanation:

(x+y)∧3 =(-2)∧3

x∧3+y∧3+3xy(x+y) =-8

x∧3+y∧3+8 = -3xy(x+y)

so, x∧3+y∧3+8 = -3xy × (-2)=6xy

Answer 2

Answer:

(x+y)∧3 =(-2)∧3

x∧3+y∧3+3xy(x+y) =-8

x∧3+y∧3+8 = -3xy(x+y)

so, x∧3+y∧3+8 = -3xy × (-2)=6xy

Step-by-step explanation: