Question

6y+6x=5xy与6=xy 的二元二次方程组

Answer 1

6y+6x=5xy

6=xy

6x+6y=5*6

x+y=5

x=5-y

把x=5-y代入xy=6

(5-y)y=6

y方-5y+6=0

(y-2)(y-3)=0

y1=2

y2=3

把这二个值代入x+y=5

x1=3

x2=2