Question

2^x-2^x-1=4 then x^x=?​

Answer 1

2

x

−2

x−1

=4

2

x

−2

x

2

−1

=4

2

x

(1−

2

1

)=2

x−1

=4=2

2

∴ x−1=2

from this we get x=3

x

x

=3

3

=27

Answer 2

Answer:

x=3

Step-by-step explanation:

2^x-(2^x/2)=4

2^x(1-1/2)=4

2^x(1/2)=4

2^x=8

2^x=2^3

when base are equal power are equal

x=3