# Need help with a questionWatch

#1
If x satisfies the [3^x][4^(2x+1)] = 6^(x+2), show that x = ln9/ln8
0
4 years ago
#2
(Original post by mathsRus)
If x satisfies the [3^x][4^(2x+1)] = 6^(x+2), show that x = ln9/ln8
First express everything in powers of 3 and 2. That is:

[3^x][2^(4x+2)] = [3^(x+2)][2^(x+2)]

Next divide both sides by 3^x.

See how you go and post back soon.
0
#3
sorry I was trying to figure how to simplify after dividing it by 3^x

Thanks I got up to the step before you wrote 2^(x+2) but I wasn't confident, if I could divide by 2^x+2
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