已知α，β是一元二次方程x²-4x-3=0的两实数根，则代数式（α-3）（β-3）=______．

写出下列程序运行的结果．

（1）a=2                         （2）x=100

i=1                               i=1

WHILE  i＜=6                    DO

a=a+1                            x=x+10

PRINT  i，a                      PRINT  i，x

i=i+1                             i=i+1

WEND                           LOOP  UNTIL  x=200

END                            END．