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128=(4^2x)x(2^x)
We move all terms to the left:
128-((4^2x)x(2^x))=0
determiningTheFunctionDomain -4^2xx2^x+128=0
We move all terms containing x to the left, all other terms to the right
-4^2xx2^x=-128
x=-128/1
x=-128
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