Question

Please Help! Algebra 1 quadratic formulas! Medal+fan! 2 Questions!



What is the discriminant for the quadratic expression?


18x2 + 11x





Use the discriminant to determine the number and type of solutions for the following equation.


24x2 + 13 = 0

Answer 1

\(\large ax^2 + bx+c\)

discriminant = \(\large b^2 - 4ac\)

Answer 2

im thinking the actual numbers and they are looking like 121, but i think i am wrong

Answer 3

your quadratic :

\(\large 18x^2 + 11x + 0\)

\(\large a = 18\)
\(\large b = 11\)
\(\large c = 0\)

discriminant = \(\large b^2-4ac \)
\(\qquad = 11^2 - 4(18)(0)\)

\(\qquad = 121\)

Answer 4

you're right !!

Answer 5

wow, im usually wrong in this type of maths,

Answer 6

lol, that wil change easily wid practice im sure :)

Answer 7

on the second one though, i do keep getting that one wrong in particular

Answer 8

not trying to leech :P

Answer 9

wat did u get for discriminant on second one ?

Answer 10

i got one rational solution

Answer 11

given quadratic : \(\large 24x^2 + 13 = 0\)

\(\large a = 24\)
\(\large b=0\)
\(\large c = 13\)

discriminant = ?

Answer 12

evaluate the discriminant first,

Answer 13

i got 15

Answer 14

i am sooo wrong...

Answer 15

let me redo the problem real quick

Answer 16

given quadratic : \(\large 24x^2 + 13 = 0\)

\(\large a = 24\)
\(\large b=0\)
\(\large c = 13\)

discriminant = \(\large b^2-4ac = 0^2 - 4(24)(13) = -1248\)

Answer 17

So, its negative discriminant !

Answer 18

what does a NEGATIVE discriminant tell u about the solutions ?