Question

2^(x+3) -9*2^(x) +1=0

plz help​

Answer 1

Answer:

x=0

Step-by-step explanation:

please refer to image below.

Pls Note

Any Number with exponent 0 is always 1. Thus, whenever we get 1=

$1 = {2}^{x}$

than take x=0.

hope its clear. Apply the same method in exam teacher will give full marks.

Answer 2

Answer:

2^(x+3)-9*2^x+1=0

2^3*2^x-9*2^x+1=9

8*2^x-9*2^x+1=0

-2^x+1=0

2^x=1

2^x=2^0

x=0