Question

What is the discriminant for the quadratic expression?



18x2 + 11x




A.


49


B.


121


C.


193


D.


280

Answer 1

discriminant = b² - 4ac
y = ax² + bx + c is the quadratic equation, so you have a = 18, b = 11, c = 0

Answer 2

hld on sec

Answer 3

Discriminant is b^2-4ac

Answer 4

\[ax^2+bx+c\]
\[18x^2+11x+0\]

Answer 5

a=18
b=11
c=0

Answer 6

Calculate b^2-4ac

Answer 7

the discriminant formula is b^2-4ac
find the values based on the the standard quadratic equation
ax^2+bx+c

let a = 18,b=11, c =0 and plug it into the formula

Answer 8

47x

Answer 9

we should just have a number after calculating the discriminant

Answer 10

47

Answer 11

b² - 4ac = 11² - 4(18)(0)

Answer 12

The part after the subtraction sign comes out to 0 so you're left with 11²

Answer 13

anything multiplied by 0 is 0 so we are left with 11^2-0 =11^2
what's 11 x 11 ?

Answer 14

121

Answer 15

yes that's correct

Answer 16

thanks very much