Answer:
The discriminant D=0
Step-by-step explanation:
For the duadratic polynomial [tex]ax^2+bx+c[/tex] the discriminant is
[tex]D=b^2-4ac.[/tex]
In your case, for the polynomial [tex]4x^2-20x+25,[/tex]
- [tex]a=4;[/tex]
- [tex]b=-20;[/tex]
- [tex]c=25;[/tex]
- [tex]D=(-20)^2-4\cdot 4\cdot 25=400-400=0.[/tex]
