Question

If 2^x=10, then 2^2x=
a)20
b)40
c)80
d)100
e)200

Answer 1

hint: \(2^{2x}=(2^x)^2\)

Answer 2

@zzr0ck3r, is it 100? since 2^x= 10 and (2^x)^2=2^2x, (2^x)^2=(10)^2=100?

Answer 3

100 is correct

Answer 4

okay thanks

Answer 5

yep. :)