Question

(-3)ⁿ/27=-9

Answer 1

\(\dfrac{\left(-3\right)^n}{27}=-9\)

\(\Rightarrow\left(-3\right)^n=\left(-9\right)\cdot27=\left(-3\right)^5\)

\(\Rightarrow n=5\)

Answer 2

Ta có: \(\dfrac{\left(-3\right)^n}{27}=-9\)

\(\Leftrightarrow\left(-3\right)^n=-243\)

hay n=5

Answer 3

n=5