Question

the value for X in (9^x - 3^x - 12 = 0)
from logarithms
8th c3 1pl sri chaitanya school
I want the process ​

Answer 1

Answer:

.......।।।।।।।।।।।।।।।.....................।।।।। ਫਠਖਖ

Step-by-step explanation:

ਚਠਠਚਠੲuwieiejjejekekei28883838

Answer 2

Answer:

x = 1 and log₃4

Step-by-step explanation:

$9^x - 3^x - 12 = 0$

►$3^{2x} - 3^x - 12=0$

►a² - a - 12 = 0 ...............(let , $3^{x}$ = a)

►a² - 4a +3a -12 = 0

►a(a-4) +3(a-4)=0

►(a-4)(a+3)=0

► a = 4 or, a = 3

► $3^{x}$ = 4 ,  $3^{x}$ =3

► x = $log_3 4$  or, x = 1