Question

a^2 – 5a – 20

Answer 1

@Roya

Answer 2

for this one u can't find the factors with our previous way .
this has another method .

Answer 3

What's the method to this one?

Answer 4

if u find out the previous one i would learn you this .

Answer 5

suppose we have the equation like this :
ax

ax^2+bx+c=0

Answer 6

ok...

Answer 7

we define a new parameter named delta
delta = sqrt ( b^2 -4ac )

Answer 8

\[\delta=\sqrt{b^2-ac}\]

Answer 9

ok...

Answer 10

and in this method we find roots of equation with this formula :

Answer 11

\[x=(-b \pm \sqrt{\delta})/2a\]

Answer 12

hmm...

Answer 13

just don't be confuse . e solve some example to find out this way .

Answer 14

I'm already confused...

Answer 15

think about the previous one . first u get confused but now just with 3 ex u can solve so many question like that .

Answer 16

dear Dylan u r genius .

Answer 17

If that was so, I wouldn't be confused.... :\

Answer 18

a^2-5a-20
lets change a with x to make our question like our formula

Answer 19

x^2-5x-20

Answer 20

ok...

Answer 21

compare it with ax^2+bx+c

Answer 22

tell me what 's a b c in our question ?

Answer 23

5 = b and -20 = c.

Answer 24

b=-5

Answer 25

Yeah/

Answer 26

ok now plug them in delta formula .

Answer 27

I don't know...

Answer 28

here u know amount of b and c ?
so u don't know a ?

Answer 29

no..

Answer 30

2?

Answer 31

my dear when you don't write a coefficient it means it was 1 !

Answer 32

it's just for coefficient

Answer 33

oh..

Answer 34

I'm so tired I'm about to fall asleep and I have to turn these questions in by tomorrow and I have another assignment to turn in the next day and I can't stay awake..

Answer 35

dear if u just need the answer i will send but if u have to learn them till tomorrow u should stay awake .

Answer 36

I need the answers. Honestly. but I have another assignment you could actually TEACH me with tomorrow. It's almost the same thing. The only thing is ,is that for this assignment that you are helping me with now is that I have to show the work for each question. If you're willing to write 3 problems out for me with the answer then that would be amazing, but I just need them to turn in before my teacher kicks me out of class.

Answer 37

dear sleep now , but tell me the exact time . here is 2 pm .

Answer 38

4:32 AM.

Answer 39

Could you send me the answers with the work shown or no?

Answer 40

poor dylan . see sweet dream

Answer 41

u mean solve them and write whole the answer , yes i do

Answer 42

Yes. Could you do that for me?

Answer 43

yes , send me via email and close thie question .
my email is r.norouzi88@yahoo.com

Answer 44

ok i sent it to you. goodnight sweetie.. and thank you. I'll talk to you tomorrow. ((:

Answer 45

i recieve nothing .

Answer 46

I sent it from my gmail. What's your yahoo again?

Answer 47

r.norouzi88?

Answer 48

yes i get it . mine in gmail is this too . r.norouzi88@gmail.com
i'll solve them . u need them for 2morrow morning ?

Answer 49

Yes

Answer 50

i didn't fin out part two ?

Answer 51

It's fine. it basically asks me to make my own question and solve it..

Answer 52

i'll send them back in one hour but explain part 2 first

Answer 53

u mean i should write some more question and answer them aswell ?

Answer 54

hey dis can be done if u know complex numbers..

Answer 55

Just write ONE question. not some more. I have to sleep now. :/ I'll see you tomorrow.

Answer 56

ok , see sweet dream

Answer 57

goodnight. and thank you. for everything.