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Category: Algebra

Question-179955

Question Number 179955 by Shrinava last updated on 04/Nov/22 Answered by aleks041103 last updated on 04/Nov/22 (K,+)(K/{O2},)s:KK/{O2}:s(x+y)=s(x)s(y)sbijectivedenote(abba):=(a,b)$${then}\:\left({a},{b}\right)+\left({c},{d}\right)=\left({a}+{c},{b}+{d}\right)…

Developed-the-formula-for-the-cubic-equation-when-it-has-three-real-roots-and-Cardano-is-just-not-suitable-as-discriminant-gets-negative-Given-x-3-bx-c-0-with-b-gt-0-c-gt-0-t-b-1-15

Question Number 114388 by ajfour last updated on 18/Sep/20 DevelopedtheformulaforthecubicequationwhenithasthreerealrootsandCardanoisjustnotsuitableasdiscriminantgetsnegative..Givenx3bxc=0withb>0,c>0$$\:\frac{\boldsymbol{{t}}}{\boldsymbol{{b}}}=\mathrm{1}+\frac{\mathrm{15}}{\mathrm{2}}\left(\frac{\boldsymbol{{c}}^{\mathrm{2}} }{\boldsymbol{{b}}^{\mathrm{3}} }\right)+\sqrt{\left(\frac{\boldsymbol{{c}}^{\mathrm{2}}…