因式分解:(m²-m)x²-(2m-1)x+m²+m 2x²-3xy-2y²+3x+4y-2 1/2x²-2x+1总共是三条题目 (m²-m)x²-(2m-1)x+m²+m2x²-3xy-2y²+3x+4y-21/2x²-2x+1 大家会一条写一条好吗谢谢了
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![因式分解:(m²-m)x²-(2m-1)x+m²+m 2x²-3xy-2y²+3x+4y-2 1/2x²-2x+1总共是三条题目 (m²-m)x²-(2m-1)x+m²+m2x²-3xy-2y²+3x+4y-21/2x²-2x+1 大家会一条写一条好吗谢谢了](/uploads/image/z/143215-7-5.jpg?t=%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%EF%BC%9A%EF%BC%88m%26%23178%3B-m%EF%BC%89x%26%23178%3B-%282m-1%29x%2Bm%26%23178%3B%2Bm+2x%26%23178%3B-3xy-2y%26%23178%3B%2B3x%2B4y-2+1%2F2x%26%23178%3B-2x%2B1%E6%80%BB%E5%85%B1%E6%98%AF%E4%B8%89%E6%9D%A1%E9%A2%98%E7%9B%AE+%EF%BC%88m%26%23178%3B-m%EF%BC%89x%26%23178%3B-%282m-1%29x%2Bm%26%23178%3B%2Bm2x%26%23178%3B-3xy-2y%26%23178%3B%2B3x%2B4y-21%2F2x%26%23178%3B-2x%2B1+%E5%A4%A7%E5%AE%B6%E4%BC%9A%E4%B8%80%E6%9D%A1%E5%86%99%E4%B8%80%E6%9D%A1%E5%A5%BD%E5%90%97%E8%B0%A2%E8%B0%A2%E4%BA%86)
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因式分解:(m²-m)x²-(2m-1)x+m²+m 2x²-3xy-2y²+3x+4y-2 1/2x²-2x+1总共是三条题目 (m²-m)x²-(2m-1)x+m²+m2x²-3xy-2y²+3x+4y-21/2x²-2x+1 大家会一条写一条好吗谢谢了
因式分解:(m²-m)x²-(2m-1)x+m²+m 2x²-3xy-2y²+3x+4y-2 1/2x²-2x+1
总共是三条题目 (m²-m)x²-(2m-1)x+m²+m
2x²-3xy-2y²+3x+4y-2
1/2x²-2x+1 大家会一条写一条好吗谢谢了
因式分解:(m²-m)x²-(2m-1)x+m²+m 2x²-3xy-2y²+3x+4y-2 1/2x²-2x+1总共是三条题目 (m²-m)x²-(2m-1)x+m²+m2x²-3xy-2y²+3x+4y-21/2x²-2x+1 大家会一条写一条好吗谢谢了
第一题改了,
不然不好做
(m²-m)x²-(2m²-1)x+m²+m
=m(m-1)x²-(2m²-1)+m(m+1)
=[mx-(m+1) ]*[(m-1)x-m]
2x²-3xy-2y²+3x+4y-2
=(2x²-3xy-2y²)+(3x+4y-2)
=(2x+y)(x-2y)+2(2x+y)+2y-x-2
=(2x+y)(x-2y+2)+2y-x-2
=(x-2y+2)(2x+y-1)
1/2x²-2x+1
=1/2(x²-4x+4)-1
=1/2[(x-2)²-2]
=1/2[(x-2)+√2][(x-2)-√2]
=1/2(x-2+√2)(x-2-√2)