Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$(7n+9y)^{3}$$

Evaluate

$\left(9y+7n\right)^{3}$

Expand

$729y^{3}+1701ny^{2}+1323yn^{2}+343n^{3}$

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