【简答题】已知关于x、y的二次式x 2 +7xy+ay 2 -5x-45y-24可分解为两个一次因式的乘积,求a的值.
【判断题】Pour in the eggs. Stir-fry the eggs into the rice and mix well for one minute. 倒入鸡蛋翻炒一分钟,使米饭和鸡蛋不充分混合。
【判断题】已知 X A =100.00,Y A =100.00 ; X B =50.00,Y B =50.00 ,坐标反算 a AB =45 ° 00 ′。
【简答题】Stir-fried rice and eggs First,crack the eggs and mix the eggs in a big bowl. Next, put some oil in a wok, heat the oil. Then, add rice and eggs, stir-fry for 2 minutes.
【简答题】First, (1) ( 洗西红柿并切开 ). Next, crack the eggs and (2) ( 搅拌鸡蛋 ) in a big bowl. Then, (3) ( 在锅里放油 ), heat the oil. Add the tomatoes and eggs, stir-fry for 2 minutes. Finally, (4) ( 加点盐和糖 ), serve them on...
【单选题】已知x,y满足 2x+y-2≥0 x-2y+4≥0 3x-y-3≤0 则z=x 2 +y 2 的最小值是( )
【单选题】已知x,y满足约束条件 x≥0 3x+4y≥4 y≥0 ,则 x 2 + y 2 的最小值是( )
【单选题】The more or less clause is a clause that stipulates that the ( ) delivered can be more or less within certain extent or range.
【简答题】A.more than B.less than C.more and less D.more or less