# solving for x without a calculator

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#1
4^(2x+1) = 8^(4x)

??????
i only know how to do it using log
0
2 years ago
#2
Hint: 4 = 2^2 and 8 = 2^3.

You don't need logs for this.
0
#3
(Original post by _gcx)
Hint: 4 = 2^2 and 8 = 2^3.

You don't need logs for this.
oh so you make them the same base first.
thanks. i feel a bit dumb lool
0
2 years ago
#4
(Original post by earthworm206)
oh so you make them the same base first.
thanks. i feel a bit dumb lool
dunt lul, simple mistakes to fix.
0
2 years ago
#5
(Original post by earthworm206)
oh so you make them the same base first.
thanks. i feel a bit dumb lool
Yup then you can just equate exponents.

No problem.
0
2 years ago
#6
(Original post by earthworm206)
oh so you make them the same base first.
thanks. i feel a bit dumb lool
Well if you want to use logs nobody is stopping you, but it's clearly not the neatest.

then rearrange for .
0
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