Question

expand the identities :
(3a + 2)^3​

Answer 1

Step-by-step explanation:

here the identity will be

(a+b) ^3=a^3+b^3+3ab(a+b)

now,

(3a+2)^3=(3a)^3 + (2)^3 + 3×3a×2(3+2)

= 27a^3 + 8 +18a(5)

=27a^3 + 8 + 90a

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