b1: cho\(\frac{a}{2b}\)=\(\frac{b}{2c}=\frac{c}{2d}=\frac{d}{2a}\)tinhính A=\(\frac{2011a-2010b}{c+d}\)+ \(\frac{2011b-2010c}{a+b}\)+\(\frac{2011c-2010d}{a+b}\)+\(\frac{2011d+2010a}{b+c}\)bai2 a, Tim (x,y) thuoc Z biet x+y+xy=2b, tim Max Q=\(\frac{27-x}{12-x}\)(x thuoc...
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b1: cho\(\frac{a}{2b}\)=\(\frac{b}{2c}=\frac{c}{2d}=\frac{d}{2a}\)
tinhính A=\(\frac{2011a-2010b}{c+d}\)+ \(\frac{2011b-2010c}{a+b}\)+\(\frac{2011c-2010d}{a+b}\)+\(\frac{2011d+2010a}{b+c}\)
bai2 a, Tim (x,y) thuoc Z biet x+y+xy=2
b, tim Max Q=\(\frac{27-x}{12-x}\)(x thuoc Z)
nham ban oi chi bai 1 thoi nhe
ba 2 minh lamn dc roi