Category: Algebra

Question Number 116173 by I want to learn more last updated on 01/Oct/20 $$\mathrm{How}\mathrm{many}\mathrm{ways}\mathrm{can}\mathrm{the}\mathrm{letters}\mathrm{of}\mathrm{the}\mathrm{word}\mathrm{DENKENMATHEMATICAL}$$$$\mathrm{be}\mathrm{arranged}\mathrm{if}\mathrm{no}\mathrm{same}\mathrm{letters}\mathrm{must}\mathrm{be}\mathrm{together}$$ Commented by mr W last updated on…

Question Number 116163 by harckinwunmy last updated on 01/Oct/20 $$\mathrm{I}\mathrm{need}\mathrm{a}\mathrm{general}\mathrm{rule}\mathrm{for}\mathrm{factorising}$$$$1){\mathrm{a}}^{\mathrm{n}}+{\mathrm{b}}^{\mathrm{n}}$$$$2){\mathrm{a}}^{\mathrm{n}}-{\mathrm{b}}^{\mathrm{n}}$$$$\mathrm{when}\mathrm{n}\mathrm{is}\mathrm{even}\mathrm{and}\mathrm{when}\mathrm{n}\mathrm{is}\mathrm{odd}.$$ Answered by 1549442205PVT last updated…

Question Number 50580 by behi83417@gmail.com last updated on 17/Dec/18 $$\mathit{s}\mathit{o}\mathit{l}\mathit{v}\mathit{e}\mathit{f}\mathit{o}\mathit{r}:\mathit{x},\mathit{y},\mathit{z}.$$$${\mathbf{x}}^2+{\mathbf{y}}^2=6$$$${\mathbf{x}}^2+{\mathbf{z}}^2=3$$$$\mathbf{x}(\mathbf{y}-\mathbf{z})=2\mathbf{z}$$ Answered by peter…

Question Number 181628 by Tawa11 last updated on 27/Nov/22 $$\mathrm{find}\mathrm{the}\mathrm{domain}\mathrm{and}\mathrm{range}\mathrm{of}\mathrm{y}=\frac{1}{(\mathrm{x}-1)(\mathrm{x}+2)}$$$$\mathrm{restricted}\mathrm{to}0⩽\mathrm{x}⩽6$$ Answered by Acem last updated on 27/Nov/22 Commented by Acem last…

Question Number 116091 by I want to learn more last updated on 30/Sep/20 $$\mathrm{Is}\mathrm{there}\mathrm{a}\mathrm{formular}\mathrm{to}\mathrm{tell}\mathrm{how}\mathrm{many}\mathrm{times}\mathrm{a}\mathrm{digit}\mathrm{occur}\mathrm{in}\mathrm{an}\mathrm{interval}.$$$$$$$$\mathrm{e}.\mathrm{g}.\mathrm{How}\mathrm{many}\mathrm{times}\mathrm{digits}2\mathrm{occur}\mathrm{between}1-100$$ Answered by 1549442205PVT last updated…