shuxue数学

shuxue数学1x=60y=52x=4y=322，ShuXue的字怎么写xie书学shūxué输血shūxuè鼠穴shǔxué数学shùxué术学shùxué3，shuxue=20*15*12=360020*15*12=3600(种)20*15*12=3600种20x15x12=3600种4，shuxue数学⑴-6X^+12X-6=-6(X^-2X+1)=-6(X-1)^⑵X^(X-Y)+Y^(Y-X)=(X-Y)(X^-Y^)=(X-Y)^(X+Y)⑶(X+Y+1)^-(X-Y+1)^=[(X+Y...