将抛物线y=ax2+bx-1向上平移3个单位长度后,经过点(-2,5),则8a-4b-11的值是 .
(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:=________.
(自贡)若两个连续整数x、y满足,则x+y的值是 .