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兜屈方僥蛍塀議核茅隈

盾災鯲 a^2+10a+25=-Ib-3I 侭參 (a+5)^2+Ib-3I=0 侭參 a+5=0, b-3=0 侭參 a=-5, b=3, 侭參 [b^4/((a-b)^2]*[(a^3+ab^2-2a^2b)/b^3]茅參[(b^2-a^2)/(ab+b^2)] =[b^4/(a-b)^2]*[a(a-b)^2/b^3)]茅參[(b+a)(b-a)/b(a+b)] =abX[b/(b-a)] =ab^2/(b-a...

恬葎匯兆兜屈議僥伏哘輝參僥楼葎嶷。宸乂籾朕深賀阻載児云方僥岑紛曳泌咀塀蛍盾晒酒吉塰麻隈夸。

蛍塀議核茅隈古廷 1、蛍塀議核隈隈夸 曾倖蛍塀牾,委蛍徨牾傍鳥恬葎持議蛍徨,委蛍銚牾傍鳥恬葎持議蛍銚.喘忖銚燕幣葎a/b * c/d=ac/bd 。 2、蛍塀議茅隈隈夸 (1).曾倖蛍塀牾,委茅塀議蛍徨才蛍銚救宜了崔朔壅嚥瓜茅塀牾.a/b‖c/d=...

眉蛍岻匯核2蛍岻匯繍2核3恬葎蛍銚蛍徨葎1核1 6蛍岻匯茅眉蛍岻匯犁詠6蛍岻匯核眉蛍岻匯議宜方┝36埃肇3誼2潤惚葎2蛍岻匯 2蛍岻匯紗3蛍岻匯繍蛍銚揖蛍葎恷弌巷蔚方┝6蛍徨匆核貧獏Φ脹曲隼朔犲 受隈揖貧恷朔犲

蛍塀議核隈隈夸坐集蛍塀牾烹喘蛍徨議持恬持議蛍徨喘蛍銚議持恬持議蛍銚軸ab〜cd=acbd桟嵎週蝶隈隈夸坐集蛍塀牾繍茅塀議蛍徨、蛍銚救宜了崔朔嚥瓜茅塀牾烹軸ab‖cd=adbc

2x-y/2x+y^2

(a b)/c=(a c)/b=(b c)/a=kck=a bbk=a cak=a b眉塀犲2(a b c)=k(a b c)泌惚a b c』0k=2泌惚a b c=0a b=-ck=(a b)/x=-c/c=-1k=-1賜2

http://www.fantizi5.com/shiti/shuxue/sx92816.html

b+1/a²-4‖b²+b)/(a+2) =b+1/[a-2(a+2)]〜(a+2)/[b(b+1)] =1/[b(a-2)] (x²-1)/(x²+4x+4)〜1/x+1〜[(x+1)(x+2)]/1+x =(x-1)x+1/(x+2)²〜1/x+1〜[(x+1)(x+2)]/1+x =x-1/x+2

低議蛍銚揮凄催焚担吭房

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