pls help me in this problem
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Answered by
0
Answer:
-91
Step-by-step explanation:
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Answered by
2
Answer: -91
Explanation:
125 - 216
= 5³ - 6³
= (5 - 6)³ + 3×5×6(5 - 6)
= - 3×5×6 - 1
= - 90 - 1 = -91
Identity used:
(a - b)³ = a³ - b³ - 3ab(a - b)
⇒ a³ - b³ = (a - b)³ + 3ab(a - b)
Hope it helped
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