x
0.5
0.6
0.7
0.8
…
x2﹣5x+3
0.75
0.36
﹣0.01
﹣0.36
A:0.5
B:0.6
C:0.7
D:0.8
A. narrow B. surrounded C. forbidden D. distance
分解因式:
(1)12x2﹣3y2
(2)3ax2﹣6axy+3ay2.