Theo to thi dung pp the.the x^2=25-y^2 vao pt 1 duocy=0=>x=5 hoac x=-5.vay elip va duong tron co 2 diem chung la A(5,0) va B(-5,0)
Theo to thi dung pp the.the x^2=25-y^2 vao pt 1 duocy=0=>x=5 hoac x=-5.vay elip va duong tron co 2 diem chung la A(5,0) va B(5,0)
Theo to thi dung pp the.the x^2=25-y^2 vao pt 1 duocy=0=>x=5 hoac x=-5.vay elip va duong tron co 2 diem chung la A(5,0) va B(
-5,0)