Question

2y³+y²-2y-1 factorise

Answer 1

Answer:

Step-by-step explanation:

$\bf2y^3+y^2-2y-1 \\\\=y^2( 2y+1)-(2y+1)\\\\=(2y+1)(y^2-1)\\\\=(2y+1)(y+1)(y-1)$