Question

what is discriminant? and how do I know if I have all real numbers?

Answer 1

are these different questions?

Answer 2

yes.

Answer 3

you know you have all real numbers when your domain is not restricted. in other words if you dont have a variable at the denominator or a variable in a square root then your domain is a set of all real numbers

the discriminant is the value of b^2 - 4ac

Answer 4

oh okay, thank you.

Answer 5

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