Answer:
(5x + 2) (x - 2 )
Step-by-step explanation:
5x^2 - 8x – 4
(5x ) (x )
We need the middle to be -8 and 4 factors into 4*1 and 2*2
5*2 = 10 -2 = 8
(5x 2) (x 2 )
Now determine the signs
We need -8 so 5*2 must be negative and the 2*1 must be positive
(5x + 2) (x - 2 )
