Question

a+b=-1 then the value of a^3+b^3-3ab is

Answer 1

Answer:

Step-by-step explanation:

Given: a+b=-1 ... (i)

(a+b)3=(-1)3

a3+b3+3ab(a+b)=-1

a3+b3+3ab(-1)=-1  .... Using (i)

a3+b3-3ab=-1

Answer 2

Answer:

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