Question

Si n√n=27 ⇒ n*2 -n -3 = ??

Answer 1

         $n \sqrt{n} =27 \\ \\ \sqrt{n^2*n} =27 \\ \\ \sqrt{n^3}=27 \\ \\ (n^{ \frac{1}{2} } )^3=3^3 \\ \\ n^{ \frac{1}{2} } =3 \\ \\ ( n^{ \frac{1}{2} })^2 = 3^2 \\ \\ n=9 \\ \\ n^2-n- 3=9^2-9-3=81-12$

         $n^2-n-3=69$  respuesta