Help!

1. 2^(2x) + 4 =17 x (times) 2^ (x-1)

i have been taught to find a common expression and denote it as y

i.e. 3 ^2x -10 times 3 ^x + 9=0; y= 3^x

but do not know how to do that here

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- Apr 14th 2010, 01:27 AMsarahhardtkeExponential Equation
Help!

1. 2^(2x) + 4 =17 x (times) 2^ (x-1)

i have been taught to find a common expression and denote it as y

i.e. 3 ^2x -10 times 3 ^x + 9=0; y= 3^x

but do not know how to do that here - Apr 14th 2010, 01:34 AMe^(i*pi)