(-1/4)x^4+9y^2分解因式写出过程
问题描述：
(-1/4)x^4+9y^2分解因式写出过程
答
原式=9y^2-1/4x^4=[3y-(1/2)x^2)]^2
算了……此非本人所答，答错了，当我白答
答
(-1/4)x^4+9y^2
=(3y)²-(1/2x)²
=(3y+1/2x)(3y-1/2x)
=1/4(6y+x)(6y-x)
答
(-1/4)x^4+9y^2
=9y^2-1/4x^4
=(3y)^2-(1/2x^2)^2
=(3y-1/2x^2)(3y+1/2x^2)