(5.7) Assume that the expansion of (x + 2x2 + ...+ nx)2 is ao + a1x...

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(5.7) Assume that the expansion of (x + 2x2 + ...+ nx")2 is ao + a1x + a2x +...+ a2na2n. (a) For any k with 1 <k< 2n, find an expression for a. (b) Find a simple expression for ao + a1 +·…+ an. ... (5.7) Assume that the expansion of (x + 2x2 + ...+ nx")2 is ao + a1x + a2x +...+ a2na2n. (a) For any k with 1 <k< 2n, find an expression for a. (b) Find a simple expression for ao + a1 +·…+ an. ...