谁能帮我解下这几道数学题?

来源：百度知道 编辑：UC知道 时间：2024/05/25 11:41:35
是因式分解的,用十字相乘法做!
1. 10x⑵+3x-4 PS:⑵为平方
2. 6x⑵-11xy+3y⑵
3. 2x⑵-5x+3
4. 6x⑵y⑵+7xy-3
5. 14x⑵y⑵-17xy-6
6. 3x⑷-x⑵y-2y⑵

越快给我答案越好!!!

1. 10x⑵+3x-4
=(2x-1)(5x+4)
2. 6x⑵-11xy+3y⑵
=(2x-3)(3x-1)
3. 2x⑵-5x+3
=(x-1)(2x-3)
4. 6x⑵y⑵+7xy-3
=(2xy+3)(3xy-1)
5. 14x⑵y⑵-17xy-6
=(2xy-3)(7xy+2)
6. 3x⑷-x⑵y-2y⑵
=(x^2-y)(3x^2+2y)

1、(x-1/2)(x+4/5)
2 (2x-3y)(3x-1)
3 (x-2/3)(x-1)
4 (xy-1/3)(xy+3/2)
5 (xy-42/28)(xy+8/28)
6 (3x^2+2y)(x^2-y)