Hi, i need some help solving the following equation, for some reason i can't get my head around it:

4(2^2x)+31(2^x)-8=0

it would really help me if you can post an explantion on how you solved it from the begining to the end.

(Clapping)(Wink)

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- Oct 25th 2012, 02:15 PMwolflessalexSolve the following exponential equation
Hi, i need some help solving the following equation, for some reason i can't get my head around it:

4(2^2x)+31(2^x)-8=0

it would really help me if you can post an explantion on how you solved it from the begining to the end.

(Clapping)(Wink) - Oct 25th 2012, 02:52 PMSorobanRe: Solve the following exponential equation
Hello, wolflessalex!

Quote:

We have a quadratic: .

Let

Substitute: .

Factor: .

And we have: .

Back-substitute:

. .

. .

- Oct 25th 2012, 04:14 PMwolflessalexRe: Solve the following exponential equation
Thank you very much!!! Your explanation was perfect!!

Finally i understood this annoying equation!! :)