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If x+y=12 and x y=32 , find the value of...

If `x+y=12` and `x y=32 ,` find the value of `x^2+y^2dot`

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`(x+y)^2`=`x^2+y^2+2xy`
`x^2+y^2+2xy`=`144`
`x^2+y^2`=`144-2xx32`
=`80`
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  3. If x+y=12 and x y=32 , find the value of x^2+y^2dot

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  10. If x-1/x=3, find the value of x^3-1/(x^3)

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