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# C4 question help pls watch

1. I came across this question :

Solve to find x.

4^x ln4 - 2^(x-1) ln2

To find x , I did LOGS method of logging both sides and took it from there, but the mark scheme is giving a different method (question 7c see the link)

http://www.school-portal.co.uk/Group...urceId=3992050

would i be OK , i did get -2 for x?
2. (Original post by laurawoods)
I came across this question :

Solve to find x.

4^x ln4 - 2^(x-1) ln2

To find x , I did LOGS method of logging both sides and took it from there, but the mark scheme is giving a different method (question 7c see the link)

http://www.school-portal.co.uk/Group...urceId=3992050

would i be OK , i did get -2 for x?
Its fine. If your method is correct, then you can do it however you want

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