Question

find x, if | 1 2x 4x | | 1 4. 16 | | 1. 1. 1. | =0
​

Answer 1

4

2x−1

−16

x−1

=348

⇒4

2x−1

−4

2(x−1)

=384

⇒4

2x−1

−4

2x−2

=384

⇒4

2x−1

[1−1/4]=384

⇒4

2x−1

(

4

3

)=384

⇒4

2x−1

=

3

384×4

⇒4

2x−1

=128×4

⇒4

2x−1

=512

⇒4

2x−1

=2

9

⇒2

2(2x−1)

=2

9

⇒4x−2=9 [Comparing exponents]

⇒4x=11

⇒x=

4

11