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constant

u^2+10u+9=0

(u+7)(u-1)=0 u=-7 u=1 x^2-23=-7 x^2=16 x=+-4 x^2-23=1 x^2=24 x=+-sqrt(24) x=+-2sqrt(6)

w^2/3-6u^1/3=27 w^1/3^2-6(w)^1/3-27=0 u^2-6u-27=0 (u-9)(u+3)=0 u=9 u=-3 w^1/3=9 w^1/3=-3 w=9^3 w=729 w=-3^3 w=-27

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