1、先化简:(2a-3b)(-2a-3b)+(-2a+b)²,再求值,其中,a=½,b=1.2、计算:m²(a-3)+m(3-a);x²(a-1)+4(1-a)3、利用因式分解求x(x+y)(x-y)-x(x+y)²的值,其中x+y=1,xy=½
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/02 07:50:24
![1、先化简:(2a-3b)(-2a-3b)+(-2a+b)²,再求值,其中,a=½,b=1.2、计算:m²(a-3)+m(3-a);x²(a-1)+4(1-a)3、利用因式分解求x(x+y)(x-y)-x(x+y)²的值,其中x+y=1,xy=½](/uploads/image/z/1709817-33-7.jpg?t=1%E3%80%81%E5%85%88%E5%8C%96%E7%AE%80%EF%BC%9A%EF%BC%882a-3b%EF%BC%89%EF%BC%88-2a-3b%EF%BC%89%2B%EF%BC%88-2a%2Bb%EF%BC%89%26sup2%3B%2C%E5%86%8D%E6%B1%82%E5%80%BC%2C%E5%85%B6%E4%B8%AD%2Ca%3D%26frac12%3B%2Cb%3D1.2%E3%80%81%E8%AE%A1%E7%AE%97%EF%BC%9Am%26sup2%3B%EF%BC%88a-3%EF%BC%89%2Bm%EF%BC%883-a%EF%BC%89%EF%BC%9Bx%26sup2%3B%EF%BC%88a-1%EF%BC%89%2B4%EF%BC%881-a%EF%BC%893%E3%80%81%E5%88%A9%E7%94%A8%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E6%B1%82x%EF%BC%88x%2By%EF%BC%89%EF%BC%88x-y%EF%BC%89-x%EF%BC%88x%2By%EF%BC%89%26sup2%3B%E7%9A%84%E5%80%BC%2C%E5%85%B6%E4%B8%ADx%2By%3D1%2Cxy%3D%26frac12)
xWKoI+>Ew3"W[PB%C
.!s?d8/lUI\`VOuUuUrwuI
Vk''uw2 :TwVbO`تvw߶l[dLK|V fW$
1͋
&@
?O7TÇ_T,8翸@V7Qv{K\>:{@.o#~bC=wH6FfO몢myhu}^2>hٓ\qxڳ?O^Dzf>^:=':a҄_3 ;-+,C1LĒ͒kP#S7ɢ˸oSZ9? Sh;UQ)KxTJȜhG`'pƨL#}2ohf ݍn74ti_P,/<2ןk4*y`UϜ潝P=j
ٙ'-Z