Category: Algebra

Question Number 153130 by mathdanisur last updated on 04/Sep/21 $$\mathrm{if}{\mathrm{x}}^5+{\mathrm{x}}^4+{\mathrm{x}}^3+{2\mathrm{x}}^2+\mathrm{x}+1=0$$$$\mathrm{find}{\mathrm{x}}^3-\frac{1}{{\mathrm{x}}^3}=?$$ Answered by ajfour last updated…

Question Number 87586 by manr last updated on 05/Apr/20 $$l.c.moftwonumbersis{p}^2{q}^4{r}^{4}pqrare$$$$primes.findthepossibleno.ofpairs$$ Answered by mr W last updated on 05/Apr/20…

Question Number 87581 by peter frank last updated on 05/Apr/20 Commented by TANMAY PANACEA. last updated on 05/Apr/20 $$i[shallsolveinpaper$$ Answered by TANMAY PANACEA.…

Question Number 87553 by TawaTawa1 last updated on 05/Apr/20 Answered by ajfour last updated on 05/Apr/20 $$letno.ofboysinA=3k$$$$\dots \dots \dots ..girls\dots .A=2k$$$$letno.ofgirlsinB=x$$$$\mathrm{\&}no.ofboysinB=y$$$${no}.\:{of}\:{girls}\:{in}\:{C}\:=\:{z}…

Question Number 153079 by mathdanisur last updated on 04/Sep/21 $$\mathrm{Solve}\mathrm{the}\mathrm{equation}:$$$$\sqrt{1-\mathit{z}}=2{\mathit{z}}^2-1+2\mathit{z}\sqrt{1-{\mathit{z}}^2}$$ Commented by MJS_new last updated on 04/Sep/21 $$\mathrm{I}\:\mathrm{get}\:{z}=\mathrm{sin}\:\frac{\pi}{\mathrm{5}}\:=\frac{\sqrt{\mathrm{10}−\mathrm{2}\sqrt{\mathrm{5}}}}{\mathrm{4}} \…