题目

数学计算题酷爱戳进来!
直接写出结果也是可以的- -毕竟窝只想校对一下
（2a-b)(a+2b-3)
(x+y+5)(x+y+4)
(x-y)^2-(x+y)^2
(3a-b)^2+(b+3a)^2
(2x-1)(2x+1)(4x^2+1)
(2m+3n)^2(3n-2m)^2
4(a+2)^2-7(a+3)(a-3)+3(a-1)^2
(2a-b-3)(2a+b-3)
5a^2b·(-2ab^3)
(-2x^3y)^2·(-x^2y^2)
4x^2y(3xy^2z-7xz)
(2a^2+ab-2b^2)·（-1/2ab)
(2x+3y)(4x+7y)
(a+9)(a+1)
(5-2x)(2x+5)
(-3a+2b)(-3a-2b)
(3/4x-4/3y)^2
(0.5a+1/3b)^2
(-2a^2-7b)^2
(-8b+1/4)^2

提问时间：2021-03-27

答案

2a²+3ab-6a-2b²+3bx²+y²+2xy+9x+9y+20-4xy18a²+2b²16x^4-116m^4+81n^4-72m²n²10a+824a²-12a-b²-9-10a³b^4-4x^8y^412x³y³z-28x³yz-a³b-...