Question

taken down temporarily

Answer 1

the discriminant is \[\Delta =b^2-4ac=5^2-4(1)(4)=25-16=9\]

Answer 2

what does that tell you

Answer 3

Okay I understand that I think! That's the discriminant part of the quadratic formula. What about part B and C? I forgot how to complete the square :(

Answer 4

Are you still there?

Answer 5

@bleebleebleed

Answer 6

is it multiple choice?

Answer 7

no sadly not

Answer 8

lets see

Answer 9

I have part A down, just need part B and C if you have time

Answer 10

I have a website that should help you try www.mathway.com or jiskha.com

Answer 11

to graph it?

Answer 12

im bad at math

Answer 13

mathway

Answer 14

mathway allows u too graph it

Answer 15

I know what mathway is but do you know how to complete the square?

Answer 16

what grade are you in?

Answer 17

9th this is Algebra

Answer 18

ok

Answer 19

ill have my sister help you she should know

Answer 20

is she on now? thank you!

Answer 21

your welcome lemme tag her

Answer 22

@Sam_Aka_Sara

Answer 23

she is online?

Answer 24

yes

Answer 25

okay awesome thank you, if she doesn't reply that quickly I'll try and have someone else help cause I'm timed xc

Answer 26

shes viewing it

Answer 27

yay awesome

Answer 28

ok i got it

Answer 29

you do? awesome please show me how

Answer 30

@jsmusic3

Answer 31

@AaronAndyson

Answer 32

1. A quadratic equation is shown below:

x2 + 5x + 4 = 0

Part A Discriminant, D = (5)^2 - 4{1)(4)

= 25 - 16

= 9

Since D > 0, equation has two distinct rational roots : - 1 and - 4

Answer 33

@nincompoop

Answer 34

I have that down but what about B and C?

Answer 35

Equation can easily be factorised

4x2 -12x + 5 = 0

(2x - 1)(2x - 5) = 0

2x - 1 = 0 or 2x - 5 = 0

x = 1/2 , 5/2

Answer 36

That's all to that one?

Answer 37

For B

Answer 38

Part C

By completing the square

2x^2 -10x + 3 = 0

x^2 - 5x + 3/2 = =

(x - 5/2)^2 - 25/4 + 3/2 = 0

(x - 5/2)^2 - 19/4 = 0

(x - 5/2)^2 = 19/4

x - 5/2 = +/- sqrt(19/4)

x = 5/2 +/-sqrt(19/4)

= 4.68, 0.32

Answer 39

ok then nvm

Answer 40

thank you for at least trying bleebleebleed and oh my gosh thank you so much quickthing! how do I give medals to both you guys? I'm really new to this lol

Answer 41

Click best answer. No need to give me a medal though c:

Answer 42

I do! You helped me lots! What math class do you take? cx

Answer 43

The math class of doom. :P

Answer 44

I would rather forget math during weekends XD

Answer 45

I meant in school lmao but you're really good c'x

Answer 46

Not really.
Take a look. https://answers.yahoo.com/question/index?qid=20140414100611AALyX7f

Answer 47

is that the one I had?

Answer 48

I believe so.

Answer 49

1. A quadratic equation is shown below:

x2 + 5x + 4 = 0

Part A: Describe the solution(s) to the equation by just determining discriminant. Show your work. (3 points)

Part B: Solve 4x2 -12x + 5 = 0 using an appropriate method. Show the steps of your work and explain why you chose the method used. (4 points)

Part C: Solve 2x2 -10x + 3 = 0 by using a method different from the one you used in Part B. Show the steps of your work. (3 points)

Answer 50

well I don't understand why I should graph the first one it doesn't answer anything

Answer 51

Math is weird. If I can 'help' more, let me know c:

Answer 52

yeah lmao it really is. But yeah I will! I'll take your word for it on these questions, talk to you later! c:

Answer 53

Okie c: