题目：you want to creatr a test data set that uses a datalines statement to read in values for X and Y . in the data step, you want to creat a new variable, Z,  equal to 100+50*x+2*(x^2)-25*y+y^2. use the following (X,Y) data paires:(1,2),(3,6),(5,9),(9,11).

以下是我的作业，运行错误，请求指导！！！
data test;
input x y;
z=100+50*x+2*(x^2)-25*y+y^2;
datalines;
1 2
3 6
5 9
9 11
;
proc print;
run;