来自方聪丽的问题
已知n为正整数,且x^2n=7,求(3x^3n)²-4(x²)^2n
已知n为正整数,且x^2n=7,求(3x^3n)²-4(x²)^2n
3回答
2020-02-26 01:51
已知n为正整数,且x^2n=7,求(3x^3n)²-4(x²)^2n
已知n为正整数,且x^2n=7,求(3x^3n)²-4(x²)^2n
(3x^3n)²-4(x²)^2n
=9x^6n-4x^4n
=9(X^2n)^3-4(x^2n)^2
的值...
值还要我算啊?97^347^263-459594960-150-13000-50-60+1=28892889