Ответ:
4a^2+a-3/a^2+2a+1=4a^2+3a-3/a^2 +1=4a^4+3a^3-3+a^2/a^2=4a^4+3a^3+a^2-3/a^2
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Ответ:
4a^2+a-3/a^2+2a+1=4a^2+3a-3/a^2 +1=4a^4+3a^3-3+a^2/a^2=4a^4+3a^3+a^2-3/a^2