Question

r=2 =729q³+243q²(2)+27q(2)²+(2)³​

Answer 1

Step-by-step explanation:

Given,

r =2

= 729q^3 + 243q^2(2) + 27q(2)^2 + (2)^3

= 729q^3 + 486q^2 + 27q(4) + 8

= 729q^3 + 486q^2 + 108q + 8

= 9 (81q^3 + 54q^2 + 27q) + 8 (Since,in all numbers common table is 9...,)

= 9m + 8 (Let,m = 81q^3 + 54q^2 + 27q).

:.a^3 = 9m + 8.

Hope it Helps!

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