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Factorise:2y³+ y²-2y-1

Answer» {tex}2y ^{3} + y ^{2} - 2y - 1 \\\\ \\\\ = y ^{2}(2y + 1) -1 (2y + 1) \\\\ \\\\ = (2y + 1)(y ^{2} - 1) \\\\ \\\\ = (2y + 1)(y + 1)(y - 1){/tex}


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