ᠨᠢᠭᠡ ᠦᠯᠦ ᠮᠡᠳᠡᠭᠳᠡᠭᠴᠢᠲᠡᠢ ᠬᠤᠶᠠᠷᠳᠤᠭᠠᠷ ᠵᠡᠷᠭᠡ ᠶᠢᠨ ᠲᠡᠭᠰᠢᠳᠭᠡᠯ
,21.2.1 ,,, 1500dm2 10 ,, x 6x2 ,10×6x2=1500,x2=25,,,, x2=p 1 ,1 p0 1 ,,,（2）p=0 1 x1=x2=0 ,3 P0 x x ,,⑴2x2-8=0 ⑵9x2-5=3 ⑶ (x+6)2-9=0 ⑷3(x-1)2-6=0 ⑸ x2-4x +4=5 ⑹9x2+5=1, 2 1 （X +3)2 =5 , ,X2+6x+4=0,X2+6x=-4,X2+6x+9=-4+9,(x+3)2=5, 3 x2+6x+4=0 ,,1 , ,⑵, ,,⑶, , ,1. ,2. ,
ᠮᠣᠩᠭᠣᠯ ᠳ᠋ᠣᠺ ᠤᠨ ᠬᠥᠮᠥᠷᠭᠡ