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dtan5457
 one year ago
If x+1/x=7, compute x^3+1/x^2
dtan5457
 one year ago
If x+1/x=7, compute x^3+1/x^2

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dtan5457
 one year ago
Best ResponseYou've already chosen the best response.0So far I have x^2+1=7x x^2=7x1 x^3+1/7x1 x^2x/(1)+1/(7x1) when I cross out 7x1 i get x+1. then what?

Hero
 one year ago
Best ResponseYou've already chosen the best response.1( x+1)/x=7 multiply both sides by × x +1 =7x Subtract × from both sides 1=6x x= 1/6

Hero
 one year ago
Best ResponseYou've already chosen the best response.1Plug × to other expression

dtan5457
 one year ago
Best ResponseYou've already chosen the best response.0wait so all my x^2+1=7x was incorrect?

Hero
 one year ago
Best ResponseYou've already chosen the best response.1. Is the original problem you posted correct as written?

dtan5457
 one year ago
Best ResponseYou've already chosen the best response.0\[x+\frac{ 1 }{ x }=7, x^3+\frac{ 1 }{ x^2 }=?\]

Hero
 one year ago
Best ResponseYou've already chosen the best response.1± see, Better you use later to post from now on.

dtan5457
 one year ago
Best ResponseYou've already chosen the best response.0so does your solution still stand?

Hero
 one year ago
Best ResponseYou've already chosen the best response.1Calculate ( x +1/ x ) ^ 2 and (x+1 / x ) ^ 3 )

dtan5457
 one year ago
Best ResponseYou've already chosen the best response.0one of my friends even said its unsolvable without quadratic formula but im pretty sure my teacher doesnt want a quadratic use

Hero
 one year ago
Best ResponseYou've already chosen the best response.1If you don't get that I can't help you

dtan5457
 one year ago
Best ResponseYou've already chosen the best response.0\[x^2+\frac{ 1 }{ x^2 }+x+\frac{ 1 }{ x^2 }\]

dtan5457
 one year ago
Best ResponseYou've already chosen the best response.0lol i give up, i'll ask my teacher tomorrow. thanks

dtan5457
 one year ago
Best ResponseYou've already chosen the best response.0Been working on 4 problems for about 2 hours, it's time too move on if I want decently sufficient sleep. I've been getting mixed answers and solutions so I'll just let my teacher explain.

dtan5457
 one year ago
Best ResponseYou've already chosen the best response.0it can be solved with the quadratic formula so I just used that. Not sure if that's what my teacher wants but i'll see.

Hero
 one year ago
Best ResponseYou've already chosen the best response.1Nope, it probably isn't. There's another way to solve that your teacher may be looking for.
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