Question

Use the quadratic equation y = x^2 + 3x – 10. Calculate the discriminant to determine the number of real roots.

Answer 1

A.
one real root

B.
two real roots

C.
no real roots

D.
no solution to the equation

Answer 2

the discriminant is b^2 -4ac, in your equation b=3, a=1 and c=-10
If the discriminant is positive, you have two real roots, if it is negative, you have no real roots, if it is zero, then you have only one solution

Answer 3

so... the answer is c

Answer 4

not c. keep i'm mind the negatives

Answer 5

well, when i do b^2 -4ac i get (3)^2-4(1)(-10)=49

Answer 6

so the answer should be B, two real roots

Answer 7

OK THANKS

Answer 8

Your are welcome :)

Answer 9

:)