Question

FAN AND MEDAL!!

Answer 1

Determine the factors of x^2 - 12x - 20.

(x - 2)(x + 10)

(x - 10)(x + 2)

(x - 5)(x + 4)

Prime

Answer 2

so factor this
look at the last term you have 20
list all factors of 20

Answer 3

Negative twenty. ^^ And hang on. Let me think

Answer 4

1,2,4,5,10

Answer 5

@precal

Answer 6

1,20
2,10
4,5

Answer 7

ok the minus in front of 20 means to subtract them
20-1
10-2
5-4
we only want positive results

Answer 8

your middle number is a 12 does any of them produce a 12

Answer 9

2 and 10

Answer 10

10-2 is not 12

Answer 11

so when this happens we say it is prime and we can not factor it

Answer 12

Oh okay thanks!!

Answer 13

np

Answer 14

One more if thats okay?

Answer 15

ok, what do you have

Answer 16

This is A right?

Factor completely: -5k^2 + 20k - 30

-1(5k^2 - 20k + 30)

-5(k^2 - 4k + 6)

-5k(k^2 - 4k + 6)

-5(k^2 + 4k - 6)

Answer 17

not quite because all of them also, have a in common to factor out

Answer 18

so factor out a -5

Answer 19

It would have to be B

Answer 20

yes that would be correct

Answer 21

Thanks!!

Answer 22

np

Answer 23

Factor completely: 2x^2 - 6x - 36

2(x - 3)(x + 6)

2(x - 6)(x + 3)

(2x - 4)(x +9)

(2x - 9)(x + 4)

Answer 24

Isnt this A

Answer 25

can you close out this question and post a new thread, please?