Question

Which polynomial is 3x – 1 a factor of?
6x2 + 10x – 4


9x2 +12x – 3


9x2 + 3x – 5


6x2 + 7x – 6

Answer 1

BRILL MY FAV

@hippo211 you're in good hands

Answer 2

What you can do to find this is either divide the polynomials by 3x-1
Or you can find the value of x in this case, which is 1/3, then plug into each equation and work out
If you get 0 that means that 3x-1 IS a factor

Answer 3

thank you

Answer 4

i don't understand?

Answer 5

It depends on which way you want to do it
The first way is more complicated but less tedious and the second way is simple but tedious

Answer 6

Oh in that case
How would you solve 3x-1=0?

Answer 7

x=-1/3

Answer 8

I set it equal to zero because that is how you would solve a real polynomial when you factor

Is it -1/3 or 1/3? :)

Answer 9

-1/3

Answer 10

*cough* the remainder theorem *cough*

Answer 11

1/3?

Answer 12

Yep

Answer 13

Ok so now if you input 1/3 for x you SHOULD get 0 for a value, because you set it equaled zero in the factor, so input 1/3 for x in all the equations, if the outcome of one of them is 0 then that is the right answer

Answer 14

is it the first one because that what I got?

Answer 15

Yep that looks about right
Good job :)

Answer 16

And yes jdoe001 is right the method you used is called remainder theorem