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2^2x+1-9*2^x+4=0
We add all the numbers together, and all the variables
2^2x-9*2^x+5=0
Wy multiply elements
2^2x-18x+5=0
We add all the numbers together, and all the variables
-18x+2^2x+5=0
We move all terms containing x to the left, all other terms to the right
-18x+2^2x=-5
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