Factorise the following using appropriate identities 2x³+x²-2x-1

1.	Factorise the following using appropriate identities 2x³+x²-2x-1
Answer» Step-by-step explanation: 2X^3 + X^2 - 2x - 1 = 2x^3 - 2x + x^2 - 1 = 2x(x^2 - 1) +1(x^2 - 1) =(x^2 - 1)(2x + 1) =(x + 1)(x - 1)(2x + 1). (a^2 - B^2) = (a + b)(a - b)

Answer»

Step-by-step explanation:

2X^3 + X^2 - 2x - 1

= 2x^3 - 2x + x^2 - 1

= 2x(x^2 - 1) +1(x^2 - 1)

=(x^2 - 1)(2x + 1)

=(x + 1)(x - 1)(2x + 1). (a^2 - B^2) = (a + b)(a - b)

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Factorise the following using appropriate identities 2x³+x²-2x-1​

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Factorise the following using appropriate identities 2x³+x²-2x-1