14. Tìm x,y sao cho: ( Axy1 yAxy11) : Axy1: Cxy1  10 : 2 :1A: (3,7) B: (3,2) C: (8,3) D: (7,3)  y yA C2 5 90 x x5 2 80 nghiệm (y,x) là:

( AXY1 YAXY11)

TRAC NGHIEM CONG THUC NHI THUC NEWTON

14. Tìm x,y sao cho: ( A

_x^y_¹

 yA

_x^y_^¹¹

) : A

_x^y^¹

: C

_x^y^¹

 10 : 2 :1

A: (3,7) B: (3,2) C: (8,3) D: (7,3)

  

y y

A C

2 5 90

 

x x

5 2 80

 nghiệm (y,x) là:

( AXY1 YAXY11)

14. Tìm x,y sao cho: ( A