A:x2﹣6x﹣16=(x﹣8)(x+2)
B:x2y2﹣10xy+16=(xy+2)(xy+8)
C:x2+13xy﹣30y2=(x﹣10y)(x﹣3y)
D:x2﹣5xy+6y2=(x﹣2)(x﹣3)
I didn't know what to do, but then an idea suddenly ____ me.
以18m/s的速度行驶的汽车,紧急刹车后做匀减速直线运动,其加速度大小为6m/s2,求: