Question

3x^2 - x - 10

When this trinomial is factored completely, one of its factors is
A) x + 2
B) x - 5
C) 3x + 5
D) 3x - 2

Answer 1

your answer is (3x+5 ) for one factor and the other is (x-2 )

Answer 2

one way is to factor it
trial and error, with experience
(3x+5)(x-2)

answer is C