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Category: Algebra

Question-221944

Question Number 221944 by hardmath last updated on 13/Jun/25 Commented by hardmath last updated on 13/Jun/25 $$\mathrm{If}: \\ $$$$\bigtriangleup\mathrm{ABC}\:-\:\mathrm{Equilateral}\:\mathrm{Triangle} \\ $$$$\mathrm{MK}\:\parallel\:\mathrm{AB} \\ $$$$\mathrm{MN}\:\parallel\:\mathrm{AC} \\ $$$$\mathrm{ML}\:\bot\:\mathrm{AB}…

Question-221943

Question Number 221943 by hardmath last updated on 13/Jun/25 Answered by MrGaster last updated on 13/Jun/25 $$\underset{{i}=\mathrm{1}} {\overset{{k}} {\sum}}{i}\left({k}−{i}+\frac{\mathrm{2}}{\mathrm{3}}\right)=\underset{{i}=\mathrm{1}} {\overset{{k}} {\sum}}\left({ki}−{i}^{\mathrm{2}} +\frac{\mathrm{2}}{\mathrm{3}}{i}\right)={k}\underset{{i}=\mathrm{1}} {\overset{{k}} {\sum}}{i}−\underset{{i}=\mathrm{1}} {\overset{{k}}…

70-71-72-73-1-

Question Number 221829 by fantastic last updated on 11/Jun/25 $$\sqrt{\mathrm{70}.\mathrm{71}.\mathrm{72}.\mathrm{73}+\mathrm{1}} \\ $$ Answered by aleks041103 last updated on 11/Jun/25 $$\mathrm{70}.\mathrm{71}.\mathrm{72}.\mathrm{73}+\mathrm{1}= \\ $$$$=\mathrm{70}.\mathrm{73}.\left(\mathrm{70}+\mathrm{1}\right)\left(\mathrm{73}−\mathrm{1}\right)+\mathrm{1}= \\ $$$$=\mathrm{70}.\mathrm{73}.\left(\mathrm{70}.\mathrm{73}+\mathrm{73}−\mathrm{70}−\mathrm{1}\right)+\mathrm{1}= \\…

Question-221791

Question Number 221791 by hardmath last updated on 10/Jun/25 Commented by hardmath last updated on 10/Jun/25 $$\mathrm{ABC}\:-\:\mathrm{equilateral}\:\mathrm{triangle} \\ $$$$\mathrm{MK}\:\parallel\:\mathrm{AB} \\ $$$$\mathrm{MN}\:\parallel\:\mathrm{AC} \\ $$$$\mathrm{ML}\:\bot\:\mathrm{AB} \\ $$$$\mathrm{AC}\:=\:\mathrm{a}…