if 5^x-5^x-3=124*5^y what is y in terms of x?
a) x
b) x-6
c) x-3
d) 2x+3
e) 2x+6
Thanks and regards,
Saurabh.
a) x
b) x-6
c) x-3
d) 2x+3
e) 2x+6
Thanks and regards,
Saurabh.
5^x - 5^(x-3) = (125-1)5^y
5^x - 5^(x-3) = (5^3 - 1)5^y
5^x - 5^ (x-3) = 5^(3+y) - 5^y
comparing the exponents
y = x-3 or x = 3+y
