Question

tinh nhanh

(111.222+444.888):(222.444+333.666)

ko dc su dung may tinh

Answer 1

(111*222+444*888)/(222*444+333*666)=(111*111*2+444*444*2)/(222*222*2+333*333*2)=[(111²+444²)*2]/[(222²+333²)*2]=(111²+111²*4²)/(111²*2²+111²*3²)=[(111²)(1+16)]/[(111)²(4+9)]=17/13

Answer 2

ai tick cho tròn 100 vs