Question

factorise 3xsquare-x-4 the answer should be (3x-4) (x+1) and how did you get show on the side of your note book plzzz help
​

Answer 1

Answer:

Step-by-step explanation:

Now, 3x²-x-4

=3x²(-4)

=-12x²

3x²+3x-4x-4

3x(x+1) -4(x+1)

(3x-4) (x+1)

According to zero product rule

3x-4=0 or x+1=0

X=4/3 or x=-1