A:To connect
B:Having connected
C:Connecting
D:Connected
程序:
INPUT x
IF x>0AND x<=4 THEN
y=2*x
ELSE
IF 4<x AND x<=8 THEN
y=8
y=24-2*x
END IF
PRINT y
END
已知实数a、b满足(a2﹣b2)2﹣2(a2﹣b2)=8,则a2﹣b2的值为( )