Question

Factor completely: 2x^2 − 6x − 20

prime

(2x − 10)(x + 2)

(x − 5)(2x + 4)

2(x − 5)(x + 2)

Answer 1

is it (2x − 10)(x + 2) ? @jim_thompson5910

Answer 2

FOIL it out and see if you get the original expression

Answer 3

i did for all of them i keep doing something wrong ):

Answer 4

it turns out that they're all equivalent actually

Answer 5

it's just that the last one is the most factored

Answer 6

i dont understand ):

Answer 7

if you were to expand out each option, they would all expand out to 2x^2 - 10x - 20

Answer 8

the last option is just the most factored option

Answer 9

but i can only pick one option would it be prime then?

Answer 10

it's not prime, you pick the option that's the most factored

Answer 11

oh why is that?

Answer 12

because they want you to factor and usually that means "factor as much as possible"

Answer 13

this is assuming you can factor (which you can in this case, so it's not prime)