Question

If a+ b = -1 , then value of a^3+ b^3 -3ab is ??

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

answer is -1

Step-by-step explanation:

given: a+b=-1

solution:

since (a+b)^3= a^3+b^3+3ab(a+b)

-1= a^3+b^3+3ab(-1) therefore a^3+b^3-3ab= -1 answer

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