10道初一数学化简求值题 有过程
出题,随便什么题都行,只要是化简求值的
人气:381 ℃ 时间:2019-10-19 23:21:45
解答
1.3ab-4ab+8ab-7ab+ab a=1,b=2
2.2y+(-2y+5)-(3y+2) x=3,y=4.5
3.已知A=x3-2x2+x-4,B=2x3-5x+3,计算A+B
4.5(x-2y)2-3(-x+2y)-100 ,2y-x=5
5.9a2+[7a2-2a-(-a2+3a)]= a=6
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