1.已知x+y=6,xy=7,求(3x+y)+(x+3y) 2.(1-1/2)(1-1/31.已知x+y=6,xy=7,求(3x+y)+(x+3y)2.(1-1/2)(1-1/3)(1-1/4).(1-1/10)3.(x+ax+3)(x-ax+3)=a的4次方+2x+9,求a的值4.x+a+16是一个完全平方式,求a

Question

1.已知x+y=6,xy=7,求(3x+y)+(x+3y) 2.(1-1/2)(1-1/3
1.已知x+y=6,xy=7,求(3x+y)+(x+3y)
2.(1-1/2)(1-1/3)(1-1/4).(1-1/10)
3.(x+ax+3)(x-ax+3)=a的4次方+2x+9,求a的值
4.x+a+16是一个完全平方式,求a

Answer 1