Question

O(d)'? Which expression is equivalent to

Answer 1

Answer:

2nd Option:

$\frac{1}{ {a}^{42} }$

Step-by-step explanation:

${( {r}^{ - 7}) }^{6}$

Since,

${( {a}^{x}) }^{y} = {a}^{xy}$

Then,

$= {r}^{ (- 7 \times 6)} = {r}^{ - 42}$

Since,

${a}^{ - 1} = \frac{1}{a}$

Then,

$= {r}^{ - 42} = \frac{1}{ {r}^{42} }$

Therefore,

2nd Option is correct.