Question

Factor the trinomial: x2 - 10x + 9


(x - 1)(x - 9)


(x + 1)(x - 10)


(x - 3)(x - 3)


prime

Answer 1

x^2 - 10x + 9
=x^2 - 9x -x + 9
=x(x-9) -(x-9)
Can you try to group the like terms and see what you'll get?

Answer 2

I don't know what 'group these terms' means.

Answer 3

Hmmm... In x(x-9) and -(x-9)
what is the common factor?

Answer 4

9?

Answer 5

Nope
Take 6 and 9 as an example
6 = 2(3), 9=3(3)
The common factor is 3 and you see they are both multiples of 3
Can you try again now?

Answer 6

Still doesn't make any sense.

Answer 7

which part does not make sense?

Answer 8

all of it

Answer 9

how do you factorise xy +x ?

Answer 10

No idea

Answer 11

Do you know what is common factor?

Answer 12

no

Answer 13

Alright, then please visit this website to get the basic idea
http://www.purplemath.com/modules/factnumb.htm

Answer 14

Tell me if you get the basic idea of it after reading the webpage. If you still don't understand, I'll try to explain it to you again.

Answer 15

After you've finished reading and know the basic of factorization, we can start discussing your problem

Answer 16

@BazBendell
I don't feel safe to ask you read the webpage....
Sigh, we shall start from the basic here...
First you need to know that 6 = 1x6 = 2x3, understand this?

Answer 17

yes

Answer 18

Okay, so ,1, 2, 3, and 6 would be the factor of 6, got this part?

Answer 19

yup

Answer 20

for 9 , it can be expressed as 1x9, and 3x3
So, what is the factors of 9?

Answer 21

*is -> are

Answer 22

1 and 3

Answer 23

and also?

Answer 24

9?

Answer 25

yes

Answer 26

so factors of 6 are 1 2 3 and 6
factors of 9 are 1 3 and 9
What is the common factor of 6 and 9?

Answer 27

@BazBendell

Answer 28

3

Answer 29

yes, so do you understand what common factor is?

Answer 30

for the most part.

Answer 31

So what are the common factors of 2xy and 6x^2y^2?

Answer 32

@BazBendell

Answer 33

Hint: 2xy = 2 (x) (y)
6x^2y^2 = (2)(3)(x)(x)(y)(y)
What are the common factors?