直线y=x+4与坐标轴交于A、B两点,C点也在坐标轴上,△ABC为等腰直角三角形,则满足条件的C点坐标是 .
(眉山)计算: = _________.
(泸州)分解因式:= .
(内江)分解因式:= .
(内江)已知实数a,b满足:,,则|= .
(成都)因式分解:=________.