Find four terms of the Laurent series expansion valid in the region 0 < ]z ...

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Find four terms of the Laurent series expansion valid in the region 0 < ]z – 1| < 1 2z+1 for the function z3+z2-2z Find four terms of the Laurent series expansion valid in the region 0 < ]z – 1| < 1 2z+1 for the function z3+z2-2z