Put one? +5a+ 1=0,b? +5b+ 1 = 0 divided by a.b.
Get a+5+1/a = 0b+5+1/b = 0.
So a+ 1/a=-5 b+ 1/b=-5.
Substitute (a+ 1, b+ 1)+( b+ 1, a+ 1) to get -8.
1
Because of mx? +(2m+3)x+ 1=0 has two real roots whose product is 1.
So 1/m= 1.
m= 1
Replace x? +(2a+m)x+2a+ 1-m=0
x? +(2a+ 1)x+2a+=0
2a > when x=0; 0a & gt; 0
When x=4, a & gt-2
So a=- 1