1.计算1(m+2n)(m-2n);2(2n+5)(n-3);3(x+2y)²;4(2x+b)(3x+d); 2.计算1(x+y)(a+2b)2.(2a+3)(二分之三b+5)要有步骤,爸爸逼着做,又没学过,哎,帮帮忙吧,谢谢
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 18:29:21
![1.计算1(m+2n)(m-2n);2(2n+5)(n-3);3(x+2y)²;4(2x+b)(3x+d); 2.计算1(x+y)(a+2b)2.(2a+3)(二分之三b+5)要有步骤,爸爸逼着做,又没学过,哎,帮帮忙吧,谢谢](/uploads/image/z/544472-8-2.jpg?t=1.%E8%AE%A1%E7%AE%971%EF%BC%88m%2B2n%29%28m-2n%29%EF%BC%9B2%EF%BC%882n%2B5%29%EF%BC%88n-3%29%EF%BC%9B3%EF%BC%88x%2B2y%EF%BC%89%26sup2%3B%EF%BC%9B4%EF%BC%882x%2Bb%29%283x%2Bd%29%EF%BC%9B+2.%E8%AE%A1%E7%AE%971%EF%BC%88x%2By%EF%BC%89%28a%2B2b%EF%BC%892.%EF%BC%882a%2B3%EF%BC%89%EF%BC%88%E4%BA%8C%E5%88%86%E4%B9%8B%E4%B8%89b%2B5%EF%BC%89%E8%A6%81%E6%9C%89%E6%AD%A5%E9%AA%A4%2C%E7%88%B8%E7%88%B8%E9%80%BC%E7%9D%80%E5%81%9A%2C%E5%8F%88%E6%B2%A1%E5%AD%A6%E8%BF%87%2C%E5%93%8E%2C%E5%B8%AE%E5%B8%AE%E5%BF%99%E5%90%A7%2C%E8%B0%A2%E8%B0%A2)
1.计算1(m+2n)(m-2n);2(2n+5)(n-3);3(x+2y)²;4(2x+b)(3x+d); 2.计算1(x+y)(a+2b)2.(2a+3)(二分之三b+5)要有步骤,爸爸逼着做,又没学过,哎,帮帮忙吧,谢谢
1.计算1(m+2n)(m-2n);2(2n+5)(n-3);3(x+2y)²;4(2x+b)(3x+d); 2.计算1(x+y)(a+2b)
2.(2a+3)(二分之三b+5)
要有步骤,爸爸逼着做,又没学过,哎,帮帮忙吧,谢谢
1.计算1(m+2n)(m-2n);2(2n+5)(n-3);3(x+2y)²;4(2x+b)(3x+d); 2.计算1(x+y)(a+2b)2.(2a+3)(二分之三b+5)要有步骤,爸爸逼着做,又没学过,哎,帮帮忙吧,谢谢
1.
1.原式=m²-4n²
2.原式=2n²-6n+5n-15=2n²-n-15
3.原式=x²+4xy+4y²
4.原式=6x²+2dx+3bx+bd
2.
1.原式=ax+2bx+ay+2by
2.原式=3ab+10a+二分之九b+15
你没学过你爸让你做干吗.
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