Question

Which are factors of 3x^2 - 10x - 8

X+2. 3x-4
3x+2. X+4
X-4. 3x+4
X-2 3x-2

Answer 1

Split the middle term,
\[-10x=-12x+2x\]
then factorize

Answer 2

Hint:
We have to solve this equation, in order to find the roots of your polynomial:
\[3{x^2} - 10x - 8 = 0\]

Answer 3

try long division

Answer 4

Have you considered quickly multiplying the two factors.

Must have 3x^2 -- This rules out nothing.
Must have -8 -- This rules out #s 2, 3, and 4.
Oops! Accidentally done!

Answer 5

(3x+2)(x-4) are the factors