Hình như sai đề bài hay sao ý,bn thử xem lại nha
^_~^_^☺
ukm, chac vay.
Ma khong can nua dau
Minh dang giai toan, qua cau do roi
THU GON DON THUC SAU VA CHO BIET PHAN HE SO ,PHAN BIEN CUA DON THUC THU DUOC
-AX(xy^3).1/4.(-by)^3 (voi a,b la hang so)
cac ban oi giup minh voi
cho 2 duong thang xy//mn ,duong thang A cat 2 duong thang xy va mn lan luot tai A va B. ke tia phan giac cua foc xAB va phan giac cua goc ABM chung cat nhau tai C. Ke tia phan giac cua BAI va tia phan giac cua ABN chung cat nhau tai D.chung minh: a)AC vuong goc voi AD, BD vuong goc voi BC
cho tam giac abc vuong tai a co db la duong phan giac ke ae vuong goc voi bd [e thuoc bd ] ae cat bc o k hay chung minh dieu nay nhe +chung minh tam giac abk can +chung minh dk vuong goc voi bc +ke ah vuong goc voi bc chung minh ak la tia phan giac cua goc hac +goi i la giao diem cua ah va bd chung minh ik song song voi ac
Tim hai phan so toi gian biet hieu cua chung la 3|196.Cac tu ti le voi 3 va 5.cac mau ti le voi 4 va 7
Cho biet tu diem A thuoc tia phan giac cua goc xoy co mu nha! ve duong thang song song voi Ox cat Oy tai B va ve duong thang song song voi Oy tai C a)chung minh BOA=AOC ,b) chung minh AO la tia phan giac cua BAC
Cho 1 duong thang cat 2 duong thang song song,Hay chung minh rang:
a,Cac tia phan giac cua 1 cap goc so le (hoac so le ngoai thi song song voi nhau
b,Cac tia phan giac cua 1 cap goc dong vi thi song song voi nhau.
c,Cac tia phan giac cua 1 cap goc trong cung phia(hoac ngoai cung phia) thi vuong goc voi nhau.
Cho tam giac abc vuong tai A . Ke AH vuong goc voi BC tai H ke tia phan giac AD cua goc BAH (D thuoc BH)
a,Chung minh goc DAC=ADC
b,Ke phan giac cua goc C cat AD tai K
Chung minh CK vuong goc voi AD
Chu so thap phan thu 100sau dau phay cua phan so 1phan7 (viet duoi dang so thap phan) la chu so nao ????
Giup minh voi moi nguoi !!!! Minh TICK cho ^.^
Tim ba phan so biet tong cua chung bang 3/3/70( hon so ) cac tu cua chung ti le voi 3;4;5; cac mau cua chung ti le voi 5;1;2.
Cac ban giai chi tiet gium minh nha , minh tick cho!!!!!!!!!
