Question

Factorise
2y3 + y2 - 2y -1​

Answer 1

Step-by-step explanation:

y²(2y+1)-1(2y+1)

(y²-1)(2y+1)

(y-1)(y+1)(2y+1)

Answer 2

Answer:

(y+1) ( y- 1) (2y+1)

Step-by-step explanation:

2y³ + y² -2y - 1

y²(1+2y) - 1 (2y+1)

y² (2y+1) - 1( 2y+1)

(y² -1) (2y +1)

(y+1) ( y- 1) (2y+1) [ As, a² -b² = (a+b) (a-b) ]

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