Question

Find X
25^x = 1/5

Answer 1

note that
25 = 5^2
and 1/5 = 5^-1
now just compare the exponents...

Answer 2

sorry do not understand

Answer 3

25 =5^2
this you know ?

Answer 4

s

Answer 5

1/5 = 5^-1
this ?

Answer 6

yes
so, 0.2

Answer 7

25^x = 1/5

5^(2x) = 5^-1
comparing the exponents
2x = -1
got this ?

Answer 8

so what would be x
x=-0.5

Answer 9

correct
x = -1/2 or -0.5

Answer 10

ok

Answer 11

so would you use the same formula for all sort of questions.

Answer 12

same type of formula....ofcourse, numbers will change...

Answer 13

ok

Answer 14

i sec, so how would you do,
81^1/2 = 3^x

Answer 15

81 = 9^2

Answer 16

81 = 3^4

Answer 17

3^4^1/2 = 3^x

so, 3^2=3^x
x=2

Answer 18

I am very confused