(1234567891)2-1234567890×1234567892=______.
(1234567891)2-1234567890×1234567892=______.
125×(4+8)=______×______+______×______.
分解因式:2ax+4bx-ay-2by=(______)+(______)=(______)(______).
27046=2×______+7×______+4×______+6×______.
(1)34.37°=______度______分______秒. (2)3
(1)39.56°=______°______′______″(2)65°25′12″=______°.
125×32×25=(______×______)×(______×______)
填质数:21=______+______=______×______=______-______.
已知(3x-2)(x+1)=ax2+bx+c,那么a=______,b=______,c=______.
3.76°=______度 ______分 ______秒.
填上适当的质数.24=______+______=______+______=______+______.
巧填单位名称.1______-59______=1______;1______-9______=1______;1___