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Anyone?

all of 'em?

dear i 'll . u need to find out x and a ?

Yes please. Well, yeah. :/
It's factoring trinomials.

Instructions say --> Factor each trinomial below. Please show your work

x^2-8x+15=0
(x-3)(x-5)

I see.

20=10*2
10*2=8
10-2=8
20=5*4
5+4=9
5-4=1
4-5=-1
so can u find out the factors ?

10 and 5

u mean (a-10)(a-5) ?

Wait, which one are we on?

The second one?

second

I'd say the factors would be -10 and -5.

look at what i wrote before .
4-5=-1
4*-5=-20

(a-1) (a-10)

not -10 I meant a-1 * a-20

a^2-11a+10 is it ur equation ?

a^2-21a+20 is it ur equation

So confusing. :/

don't be confuse it's need just practice .
look at what i done

for second one as i wrote before the answer is :
a-5*a+4

ok..

i think the third one is not correct but let's check forth one :

All those up top are questions, I have to factor all of them.

ok i solve num 3 as well but first the easier

Let's do #2, again.

a^2 – a – 20

ok

What would I do first?

for factories as i remember we have some ways can u tell me the ways ?

Find the product of one and the sum of another.

plz tell me all the method

I don't know..

one is (x+b)(x+a)=x^2+(a+b)+ab
that's what u mentioned .

fortunately we can solve #2 with this :
so look at 20
tell me product of which numbers make 20?

10*2

and 1- - 2 = 8

10 - 2 = 8

so 10 and 8?

look at our formula
coefficient of x is equal to sum of the numbers , am i correct ?

Yse.

ok now tell me is the sum of 10 and 2 equal to -1 ?

10 + 2 = 12. 12 + (-13) = -1

dear now what's ur number ?
check them

The sum of 10 and 2 is 12, right?

yes

Okay, so the sum of 10 and 2 isn't -1.

....

dear don't be confuse . may i know what's ur grade ? high school ?

9th.

where r u from ?

lets learn it again with each other ok ?
ready ?
fasten ur seat belt

u r a genius . may i know ur name ?

Possibly. What's yours?

dear algebra is sweet if u touch it and guess it .

Ha. I'm a boy, 17 the name is Dylan and I'm from Florida.

ok are u ready ?

dear look at # 2 . and compare it with our formula
a^2-a-20

our formula for this one is
x^2+(a+b)x+ab

ok..

so we should find 2 numbers which their mlt = -20 and their sum = -1
ok ?

mlt=multiple

ok.

so tell me the numbers which their mlt = -20

-10 * 2

can u tell me their sum ?

sum of...?

-10 + 2?

as u and me know their sum is 10-2 =8
ok ?

or as u wrote -10+2=-8

ok..

none of them are equal to -1 . am i right ?

Right.

so let's try another numbers . tell me two other number's which mlt=-20

-5*4

ok and tell me the sum

-5 + 4 = -1///

(x-5) (x+4) .... ^_^

so u find two numbers which mlt=-20 and sum = -1
so put them in our formula

such a genius boy . u should proud of urself .

know multiple two terms to check ur answer .

So, I got it right?

ok i give u another ex and plz solve it for me .

x^2+5x+6

ok...

mlt of 5 and sum of 6.. is....

oh oh ! mlt=6 sum=5

2.5 * 2 = 5 and 3* 2 = 6...

ohhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...

note that u can't change the number for sum and mlt

3*2 = 6 and 3+2 = 5...

fantastic so put them in formula

(x+3) (x+2)

great job , look at this one :
x^2+11x+18

first tell me the mlt and sum :

9-2 = 18 and 9+2 = 11. (x+9) (x+2)

9*2*

9*2 = 18 and 9+2 = 11.

9-2 no 9*2 dear
yes u solve it .

I get THOSE.. why can't I get M questions...

Like this.. a^2 – 5a – 20..

sum of 5 and mlt of 20..

sum of -5 and -20*

it's a bit more difficult

Ugh. Sum of -5 and mlt of -20.**

How so? What do I have to do now?

HEY. I'm going to close this question and open another one. This one is getting laggy.