Question

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Answer 1

its a real rational root

Answer 2

thanks! but can you tell me why? i solves it and got -3 ....can you tell me how to determine what it is?

Answer 3

The Discriminant:
The expression in the square root, D = b^2 - 4ac , is called the discriminant, because its value can be used to discriminate between the different types of solutions that are possible:
D > 0 results in two real solutions:
If D is a perfect square (like 4, 9 64, 100, etc.) then you get two rational solutions.
If D is a not perfect square then you get two irrational solutions.

Answer 4

the discriminant value of ax^2+bx+c=0 always D=b^2-4ac
for this case, x^2-5x-4=0 it means, a=1, b=-5, c=-4
can u determine the value of disciminant (D) = ...
it is a start

Answer 5

D=41