Question

if 3^m=81 =729^r=243 then find (3m/4+n)^3 -(4n + 6r)^3

Answer 1

Answer:

$3^{m} =81\\=>3^{m}=3^{4} \\=> m = 4\\\\\\729^{r}=243\\=>(9)^{3r}=3^{5} \\=> 3^{6r} = 3^{5} \\=> 6r=5=> r= \frac{5}{6}$

Hey mate an equation with "n" as variable is missing or in the last expression there is no "n".

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