(1/3X²-y)²+(1/3x²+y)²等于多少是

问题描述:

(1/3X²-y)²+(1/3x²+y)²等于多少是

(1/3X²-y)²+(1/3x²+y)²
=1/9x^4+y²-2/3x²y+1/9x^4+y²+2/3x²y
=2/9x^4+2y²

(1/3X²-y)²+(1/3x²+y)²
=2/9x^4+2y^4
祝学习进步

(1/3X²-y)²+(1/3x²+y)²
=2/9x^4+2y^4