Jungwon922viz
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Queenmelynorongviz

3 2 3 2

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

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Icebearneedsanswerviz
1.Solution:

given, 2x^3 +x^2 −2x−1

=x^2 (2x+1)−1(2x+1)

=(x^2−1)(2x+1)

ANSWER =(x+1)(x−1)(2x+1)