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how do i verify a question when i am solving for Y.. yet i need to subsatoute X first to find Y. such as in this probelm to find Y ((xy)/(x+4)(2y/x)=3 solve for Y i end up with........lets say that X=4 Y= (3x^2+12x)/(x^22x+8)
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If k=4 then the value of (2k)^32k^3 is? Nevermind. That was an easy question. I got it. If you would still like to answer go ahead. It will help verify. subts k= 4 in where you see K kinda simple it should look like 2(4)^3 
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