Question

Choose the correct answers:
If $4^x$ $=64$, and x=3 then

• A. $2^x=8$
• B. $3^x=27$
• C. ${12}^x=1024$
• D. ${10}^x$=10000

Answer 1

Answer: (A), (B)

The correct options are
A

$2^x=8$

B

$3^x=27$

$4^x=64$
$\Rightarrow 4^x$$=4^3$ (as $64$ is $4^3$ )
$\Rightarrow x=3$
Since $x=3$, $2^3=8$ and $3^3=27$