About Lesson
13.2 Simultaneous Equations 方程组
Solve the following simultaneous equations :
解下列方程组:
(1)
Answer:
无解
(2)
Answer:
(
,
), (-2, 6)


(3)
Answer:
(2, -2), (-2, 2), (-1 +
, 1 +
), (-1 –
, 1 –
)




(4)
Answer:
(
,
) ,


( ,
) ,
( ,
) ,
( ,
) .
(5)
Answer:
(2, 1), (-2, -1), (2.32, -1.65), (-2.32, 1.65)
(6)
Answer:
(3, -2), (-3, 2), (-1
, 2
), (1
, -2
)



