1.

Factorize :`27 a^3+1/(64 b^3)+(27a^2)/(4b)+(9a)/(16 b^2)``

Answer» `(3a)^3+(1/(4b))^3+(3*(3a)^2)/(4b)+(3a)/(4b)^2`
`(3a+1/(4b))^3`.


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