移动考试综合试题库:3道初一数学题
来源:百度文库 编辑:神马品牌网 时间:2024/10/02 16:47:21
(3mn+1/2)(3mn-1/2)-m^2n^2
(-1/3p+1/2Q)(-2/3p-1/4q^2)
(x+2y+3z)(x+2y-3z)
底2题呢?
(-1/3p+1/2Q)(-2/3p-1/4q^2)
(x+2y+3z)(x+2y-3z)
底2题呢?
第3题:(x+2y)^2-(3z)^2=x^2+4xy+4y^2-9z^2
NO1. 8m^2 n^2-1/4
(3mn+1/2)(3mn-1/2)-m^2n^2 =8m^2n^2-0.25