Question

Find x if 2^ (x + 5) = 4^ (x-1) ​

Answer 1

☆Answer☆

2^(x+5) = 4^(x-1)

2^(x+5) = 2^2(x-1)

(x+5) = (2x-2)

x-2x = -2-5

-x = -7

x = 7

Check:

2^(7+5) = 4^(7-1)

2¹² = 4⁶

4096 = 4096

Thus, value of 'x = 7'.

✔

Answer 2

the answer is 7 because

2^(7+5) = 4^(7-1)

= 2^12 = 4^6

= 4096 = 4096

.°. 7 is the correct answer.