Question:
Mark (✓) against the correct answer
The value of (−3)−3 is
(a) −27
(b) 9
(C) $\frac{-1}{27}$
(d) $\frac{1}{27}$
Solution:
(c) $\frac{-1}{27}$
$(-3)^{-3}=\left(\frac{1}{-3}\right)^{3}$
$=\frac{1^{3}}{-3^{3}}$
$=\frac{1}{-27}$
$=\frac{1 \times-1}{-27 \times-1}$
$=\frac{-1}{27}$