after extrapolation
后外推
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Everything in algebra was boring extrapolation after that, including the quadratic equation, which I have never used in my life.
以后代数中的种种推论都很枯燥，包括二次方程序，我这辈子从未用过它。
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