(3+в)(3-в)+в^2--------------------- = В(3+в)9-в^2+в^2. 9----------------= ---------- В(3+в). в(3+в) 5. в-------- - -------- =а(в-5). 2(в-5) 5*2 - ав ------------- 2а(в-5)2в +в^2 -в^2. 2в-------------------= ------- 2+в. 2+в3х-1 Х-2------ - ---------=4(Х+1). 3(Х+1)9х-3 -4х+8. 5х+5---------------- = ----------12(Х+1). 12(Х+1)5(Х+1). 5--------- =. -----12(Х+1). 12 те не зависит от ХУ+1. У+5------- - ----------=У(3-у). (3-у)(3+у)(У+1)(3+у)-(у+5)у----------------------- = У(3+у)(3-у)3у+3+у^2+у-у^2-5у---------------------------- =У(3-у)(3+у) 3-у. 1--------------- = -----------У(3-у)(3+у). У(3+у) 1. 1-------------- = ----------- =1,2(3+1,2). 1,2*4,21-----5,045,04= 5 4/100=5 1/25=126/251:126/25=1*25/126=25/126