Question

2x³+x²-2x-1 factorise​

Answer 1

Answer:

Step-by-step explanation:

x²(2x+1)-1(2x+1)

(x²-1)(2x+1)

(x²-1²)(2x+1)

(x+1)(x-1)(2x+1)

Answer 2

2x³+x²-2x-1

→x²(2x+1)-2x-1 {factoring out x²)

→(2x+1)×{x²-1} {factoring out 2x+1}

→(2x+1)(x+1)(x+1) {a²-b²=(a+b)(a-b)}