Question

factoring:

x2 - 3x - 28 = 0

Answer 1

@Kidkush24 help

Answer 2

can you find 2 numbers whose sum is -3 and product is -28 ?

Answer 3

7 and 4

Answer 4

one of them is negative, which ?

Answer 5

-7 and 4

Answer 6

correct!
so, split up -3x as -7x+4x

x^2 -7x+4x-28
now factor out x from first 2 terms and 4 from last two, can you ?

Answer 7

ummmm idthink so

Answer 8

ok, to factor out x from x^2-7x, we get x (x-7)
and 4 from 4x-28. we get +4(x-7)
so, x(x-7)+4(x-7)
factor out (x-7) from this!

Answer 9

-7 4(x-7)??????

Answer 10

if you take (x-7) out from those 2 terms, what remains is
(x-7) (x+4)

thats it! factored.....

Answer 11

and don't forget the = 0
(x-7)(x+4) = 0
do you need to solve it too ? or just factoring ?

Answer 12

just factor can u help me with a few more

Answer 13

did you get this one properly ?

Answer 14

yes

Answer 15

yeah, then i can help u with next problems...just post them in a new post...so that if i am busy, others can help you too!