1.

Let (1+x+2x2)20=a0+a1x+a2x2+⋯+a40x40. Then, a1+a3+a5+⋯+a37 is equal to:

Answer»

Let (1+x+2x2)20=a0+a1x+a2x2++a40x40. Then, a1+a3+a5++a37 is equal to:



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