Question

solve for x 2 x power x - 1 = 4​

Answer 1

Answer:

x = 2

Step-by-step explanation:

(2x)⁽ˣ⁻¹⁾ = 4

Take first case

(2x)⁽ˣ⁻¹⁾ = 2²

Then 2x = 2  &  x - 1 = 2

=> x = 1  & x = 3

So x value differs

Now take second case

(2x)⁽ˣ⁻¹⁾ = 4¹

Then 2x = 4  &  x - 1 = 1

=> x = 2  & x = 2

So x values come same

Hence x = 2