practice set 5.3
(i) (8 - 5n)³
Expand
Attachments:
Answers
Answered by
1
by using (a-b)³ formula
Answered by
2
Answer:
Step-by-step explanation:
Given that,
(8-5n)³ = (8)³- 3 (8)²(5n) + 3 (8)(5n)² - (5n)³ [∵(a -b)³ = a³-3a²b+3ab²-b³ ]
= 512 - 3 (64)(5n) + 3 (8)(25n² ) - 125n³
= 512 - 960n + 600n² - 125n³ (or)
= - 125n³ + 600n² - 960n + 512 is the answer. (∵rearranging )
Similar questions