Question

help with factoring please :)

Answer 1

\[x^2-11x+24\]

Answer 2

@FibonacciChick666

Answer 3

@jim_thompson5910 help please

Answer 4

can you tell me 2 factors of 24 that add to -11, both factors are negative

Answer 5

so do two numbers exist that multiply to 24 and add to -11?

Answer 6

-8&-4 ? @campbell_st & @FibonacciChick666

Answer 7

with the last term positive and the middle term negative, you need to know that both factors will be negative...

multiplying 2 negatives gives a positive

Answer 8

well that multiplies to 32...

Answer 9

^what he said, but I know it's a type-o, so now, (this is sort of a memorization thing) you plug it into this \[(x+?)(x+?)\]

Answer 10

to check your answer, FOIL it and see if you get the same thing

Answer 11

i mean 8 and 3 @campbell_st

Answer 12

again a type o?

Answer 13

that's correct... -8 and -3....

so now you can write it in factored form...

Answer 14

yea forgot the -ve >.<

Answer 15

idk how to though i'm kinda new to this stuff :P

Answer 16

so some of the basic rules

x^2 - bx + c both factors are negative
x^2 +bx+ c both factors are positive
x^2 -bx - c the larger factor is negative and the smaller is positive
x^2 +bx - c the larger factor is positive and the smaller is negative

Answer 17

@campbell_st

Answer 18

well use the basic rules I have in the last post... then know the factors of the constant, or last term.

being able to identify the sign of the factors as the 1st step.. will save time and give you greater confidence.

its all about practise

Answer 19

so mine is in the x^2+bx-c form??

Answer 20

@FibonacciChick666

Answer 21

no your question was in the form

x^2 -bx + c which means both factors are negative

Answer 22

so when I said the memorize thing that is the form, but let @campbell_st explain that, because I forgot how I learned it :X

Answer 23

(so I just cannot explain it properly)

Answer 24

its okay @FibonacciChick666 thanks :)

Answer 25

I'd recommend you write out the table and keep it with you when you do these type of questions. Identifying via practise is far better than memorising. There is already to much to remember...

Answer 26

what table @campbell_st

Answer 27

this simple one

x^2 +bx + c both factors are positive
x^2 -bx + c both factors are negative
x^2 - bx- c the larger factor is negative and the smaller is positive
x^2 + bx - c the larger factor is positive and the smaller negative

Answer 28

what do i do with the x

Answer 29

@campbell_st sorry this is actually my first time doing this :/ and i'm really confused

Answer 30

ok... so you question

x^2 - 11x + 24 is in the form
x^2 - bx + c look at the post... and it says 2 negative factors... which is what
you found


a question like this

x^2 + 5x + 6 is like x^2 +bx + c so 2 positive factors 2 and 3


x^2 -x - 6 is like x^2 -bx - c so the larger is negative smaller positive -3, 2

x^2 + 5x - 6 is like x^2 + bx - c the larger is positive and the smaller negative
5 and -1


hope it makes sense

Answer 31

yes kinda but is there other step

Answer 32

@campbell_st