Question

If a - b = -1 and ab = 6, then what is the value of a3- b3?

A) 33 B) -19 C) 18 D) 35

Answer 1

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Answer 2

♡ Heya user ♡

Given:-

▪ a-b = -1

▪ ab = 6

To Find :-

▪ a^3 -b^3

Solution :-

a^3 -b^3

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

= (-1)^3 + 3*6 (-1)

= -1 -18

= - 19

✧ Thanks ✧