Question

Can someone please tell me the discriminant of y=-x^2+10x-19. I know the formula is b^2-4ac but I do not know what those mean.

Answer 1

they are the parts of the general placeholder for a quadratic equation:

ax^2 + bx + c

Answer 2

compare the specifics with the general to determine the values of a b c

ax^2 + bx + c
- x^2 +10x -19

Answer 3

the discriminant also tells you how many solutions your quadratic will have

Answer 4

look at the number of times it crosses the x axis, that also, tells you how many solutions you have

Answer 5

THANKS SO MUCH!

Answer 6

if the discriminant is negative, then you will have 2 complex solutions
if the discriminant is positive, then you will have 2 solutions
if the discriminant is zero, then you will have one solution (also known as a double root)

Answer 7

yw