Question

factorise 2y cube minus 5y square minus 19y plus 42 AND I NEED FULL ANSWER PLS.​

Answer 1

Here is the solution.Hope it helps you out(BRAINLIEST ANSWER PLS)

Answer 2

Answer:

(2y-7) (y+3) (y-2)

Step-by-step explanation:

= 2y³-5y²-19y+42

= 2y³+(-4y²-y²)+(2y-21y)+42

= 2y³- 4y²-y²+2y-21y+4

= 2y²(y-2) -y(y-2)-21(y-2)

take (y-2) as common

=[2y²-y-21] (y-2)

split the middle term in [2y²-y-21]

=[(2y²+6y-7y-21)](y-2)

=[2y(y+3)-7(y+3)](y-2)

=(2y-7) (y+3) (y-2)