Question

If a – b = -8 and ab = - 12 , then find value of a 3 – b 3
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Answer 1

Answer:

a³-b³=(-224)

Step-by-step explanation:

a-b=(-8)

Cubing on both the sides

(a-b)³=(-8)³

a³-b³-3ab(a-b)=(-8)³

a³-b³-3(-12)(-8)=(-8)³

a³-b³-288=(-512)

a³-b³=(-512)+288

a³-b³=(-224)

Answer 2

Answer:

(a-b)³=(-8)³

(a-b)³=a³-b³-3ab(a-b)

(-8)³=a³-b³-3(-12)(-8)

-512=a³-b³-288

a³-b³=-224

hope it helps you

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