Question

Which expressions are equivalent to the one below ? check all that apply :)

Answer 1

Answer:

its b and e

Step-by-step explanation:

Answer 2

Answer:

Option D and E are  equivalent to the given expression.

Step-by-step explanation:

Given : $\frac{21^x}{3^x}$

Solution:

$\frac{21^x}{3^x}$

Using identity : $\frac{a^x}{b^x} = (\frac{a}{b})^x$

$(\frac{21}{3})^x$   -- Option E

Now this can be written as  $21^x = 7^x \times 3^x$

Identity : $a^x \times b^x = (a \cdot b)^x$

$\frac{7^x \times 3^x}{3^x}$  -- Option D

$(7)^x$   -- Option D

Thus Option D and E are  equivalent to the given expression.