3/1/2-(x-1/3)=(-2)^2014:2^2013
1,5:1/8|x|=√64:2
3/1/2-2/3:(1x-2)=1/1/2
-3/|5-3x|=√18/-6
Cho ∆ABC co goc A=90°, tu diem K tren canh BC (K khac B, K khac C), KH vuong goc voi AC (H€AC). Tren tia doi cua tia HK lay diem I sao cho HI=HK. Chung minh:
a,AI=AK
BAK=AIK
Goc ABC= gocCIK