Question

Expand : (by using formula) (21)^3
with formula​

Answer 1

Answer:

do you want whole explaination please let me know or only answer

Answer 2

Answer:

as we know (a+b) ^3 = a^3+b^3+3ab(a+b)

Step-by-step explanation:

(20+1)^3

20^3+1^3+3*20*1(20+1)

8000+1+60(21)

8001+1260

9261

hope it helps