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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Originally Posted by sarahhardtke 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 Note that This is now in the form of a quadratic equation in so you can use the quadratic formula. Recall that for all real x:
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