Question

What is the discriminant of the polynomial below 4x^2-20x +25

Answer 1

The answer is 0 D

Answer 2

The discriminant D=0

Explanation:

For the duadratic polynomial
`ax^2+bx+c` the discriminant is

`D=b^2-4ac.`

In your case, for the polynomial
`4x^2-20x+25,`

• 
  `a=4;`
• 
  `b=-20;`
• 
  `c=25;`
• 
  `D=(-20)^2-4\cdot 4\cdot 25=400-400=0.`