Question

write the expression in factored form?
x^2+8x-xy-8y

Answer 1

Somebody please help me:)!!!!!!

Answer 2

try grouping like this first:
\(\large x^2+8x-xy-8y \)
= \(\large (x^2+8x)-(xy+8y) \)

now do you see what you can factor our from each of the groupings (parenthesis) ????

Answer 3

*factor out

Answer 4

am i suppose to still work on that or is that the answer

Answer 5

i gave a hint so you can continue...

Answer 6

what else am i suppose to do to get the answer please help

Answer 7

look at the first grouping, \(\large (x^2+8x) \)
do you see what you can factor out here? each term in this binomial has the common factor of x

Answer 8

will it be (x^2-1) ?

Answer 9

i dont know im so stupid ughh

Answer 10

no... notice that \(\large (x^2+8x)=(x\cdot \color{red}x+8 \cdot \color{red}x)=(x+8)\cdot \color{red}x \)
ok... i factored the fist term for you... can you do the same for the second grouping:
\(\large (xy+8y) \)

Answer 11

i tried working on it a bit now and i got something like x(x+8)

Answer 12

ok.... now do the second grouping from above....

Answer 13

so far i have -x(y-8) but that doesnt look right

Answer 14

no, it's not... what do both xy and 8y have in common?

Answer 15

y? so itll be y(x+8)?

Answer 16

correct... :)

Answer 17

ok i have that now how do i write my answer out?

Answer 18

one more step.
so this is what we have so far:
\(\large x(x+8)-y(x+8) \)

look at the big picture... notice they both have (x+8) as a common factor... factor this whole thing out just as you did before...

Answer 19

i dont know how to factor it out.? can you help me:x

Answer 20

suppose I give you this as an example: \(\large xa-ya \)
how would you factor this?

Answer 21

x(a) - y(a) ??? i really dont know how to do this and i even did the tutorial alot of times and still dont get it

Answer 22

both terms have "a" in common so factor that out: (x - y)a
do you understand this part?

Answer 23

could it be (x-y)( x+8)

Answer 24

yes

Answer 25

yayyy thankss now i have like 9 more to go ughhh