дано: MA1/A1B1=2/3, B1B2=15 см. найти: A1B2 - вопрос №2050885611123121512 от skey16 21.03.2022 14:04

Question

Математика: дано: MA1/A1B1=2/3, B1B2=15 см. найти: A1B2

skey16 · Answer

[tex]rac{m^2-25}{m^2+10m+25} =rac{(m-5)(m+5)}{(m+5)^2}=rac{m-5}{m+5}[/tex][tex]rac{m^2+10m+25}{25-m^2} =rac{(m+5)^2}{(5-m)(5+m)}=rac{m+5}{5-m}[/tex][tex]rac{m^2-10m+25}{m^2-25}=rac{(m-5)^2}{(m-5)(m+5)}=rac{m-5}{m+5}[/tex][tex]rac{25-m^2}{m^2-10+25}=rac{m+5}{m-5}[/tex]5.[tex]rac{5(a-5)}{a^2-25}=rac{5}{a+5}[/tex]при a=-4,5 [tex]rac{5}{a+5}= rac{5}{0,5}= 10[/tex][tex]rac{9a^2-6+1}{6a-2} = rac{9 a^{2} - 5}{6 a - 2}=rac{3 a}{2} + rac{1}{2} - rac{2}{3 a - 1}[/tex]при...