Question

find the discrimiant

Answer 1

the discriminant is

b^2-4ac

where a=8 b=18 c=-5

18^2 - 4(8)(-5)

=484

Answer 2

a=-12 b=5 c=2

5^2 - 4(-12)(2)

=121

Answer 3

a=9 b=-6 c=-4

-6^2-4(9)(-4)

=108

Answer 4

its asking me to find the solution for the last two

Answer 5

using the quadratic equation?

Answer 6

iive already work out the problem i just need someone to do it so i can see what they get

Answer 7

did you use the quadratic equation though?

Answer 8

yes

Answer 9

for the 2nd to last

= -5 (+or -) squareroot(121)/-24

so x = -1/4 or x = 2/3

Answer 10

last one

6(+or -) squareroot(108)/16

x = (1+root3)/3 or x = (1-root3)/3

Answer 11

did you get that?

Answer 12

yeah

Answer 13

a=1 b=3 c=3

no solutions to the discriminant as it is negative ( what level maths are you at)

therefore there is no solution