Question

What is the possible discriminant of the graph? –13 0 15 16

Answer 1

(-7,0) and (-3,0)

Answer 2

plz i need the answer my time is almost over and this is the only that i need

Answer 3

for a standard quadratic equation:\[ax^2+bx+c=0\]do you know what the discriminant is?

Answer 4

I dont get it very well plz i just need the abswer this time im thinking but my time is almost over

Answer 5

the discriminant is defined as:\[b^2-4ac\]in your case you are given that the graph intersects the x-axis at (-7,0) and (-3,0). so you know the roots of the quadratic must be x=-7 and x=-3, which means it can be written as:\[(x+7)(x+3)=0\]

Answer 6

if you expand this out you get:\[x^2+10x+21=0\]so now you know:

a = 1
b = 10
c = 21

plug those values into the formula for the discrimant

Answer 7

thank you so much

Answer 8

yw

Answer 9

is 16 right?

Answer 10

yes