Question

Which is not a factor of 12x3 – 82x2 – 14x?

Answer 1

and the options are ?

Answer 2

(3x – 2)
2x
(6x + 1)
(x – 7)

Answer 3

\[12x^3 -82x^2-14x\]
\[2x(6x^2-41x-7)\]
\[2x(6x^2-42x+1x-7)\]
\[2x(6x(x-7)+1(x-7))\]
\[2x(6x+1)(x-7)\]

3x - 2 is not a factor

Answer 4

My apologies!

\[ 12 x^3 - 82 x^2 - 14 x = 2x (-7+x) (1+6 x) \]

So only (3x-2) is not a factor.

Answer 5

Thank You much.

Answer 6

:)