Question

pls answer this question
i want this in afull description ​

Answer 1

Answer:

Option 3 )

$\huge \red{\boxed{210}}$

Formula used :

$\star \boxed{ \green{ \bold{ {x}^{3} + {y}^{3} = (x + y)( {x}^{2} - xy + {y}^{2} )}}}$

$\star \bold{ \boxed{ \green{ {x}^{2} - {y}^{2} = (x + y)(x - y)}}}$

$\star { \boxed{T_{r + 1} = nc_r \: {a}^{n - r} {x}^{r} }}$

Answer 2

Answer:

option 3

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