因式分解题 快帮我 (19 20:28:38)1. (x+y) ²(x-y)+(x+y)(x-y)²2. 2a(a-3)²-6a²(3-a)+8a(a-3) 3. 24xy²z²(x+y-z)-32xyz(z-x-y)²+8xyz³(z-x-y)
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![因式分解题 快帮我 (19 20:28:38)1. (x+y) ²(x-y)+(x+y)(x-y)²2. 2a(a-3)²-6a²(3-a)+8a(a-3) 3. 24xy²z²(x+y-z)-32xyz(z-x-y)²+8xyz³(z-x-y)](/uploads/image/z/121279-31-9.jpg?t=%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E9%A2%98+%E5%BF%AB%E5%B8%AE%E6%88%91+%2819+20%3A28%3A38%291.%26%23160%3B%26%23160%3B+%28x%2By%29+%26%23178%3B%28x-y%29%2B%28x%2By%29%28x-y%29%26%23178%3B2.%26%23160%3B%26%23160%3B+2a%28a-3%29%26%23178%3B-6a%26%23178%3B%283-a%29%2B8a%28a-3%29+3.%26%23160%3B%26%23160%3B+24xy%26%23178%3Bz%26%23178%3B%28x%2By-z%29-32xyz%28z-x-y%29%26%23178%3B%2B8xyz%26%23179%3B%28z-x-y%29)
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因式分解题 快帮我 (19 20:28:38)1. (x+y) ²(x-y)+(x+y)(x-y)²2. 2a(a-3)²-6a²(3-a)+8a(a-3) 3. 24xy²z²(x+y-z)-32xyz(z-x-y)²+8xyz³(z-x-y)
因式分解题 快帮我 (19 20:28:38)
1. (x+y) ²(x-y)+(x+y)(x-y)²
2. 2a(a-3)²-6a²(3-a)+8a(a-3)
3. 24xy²z²(x+y-z)-32xyz(z-x-y)²+8xyz³(z-x-y)
因式分解题 快帮我 (19 20:28:38)1. (x+y) ²(x-y)+(x+y)(x-y)²2. 2a(a-3)²-6a²(3-a)+8a(a-3) 3. 24xy²z²(x+y-z)-32xyz(z-x-y)²+8xyz³(z-x-y)
1.(x+y) ²(x-y)+(x+y)(x-y)²
=(x+y) (x-y)(x+y+x-y)=2x(x+y) (x-y)
2.2a(a-3)²-6a²(3-a)+8a(a-3)
=2a [(a-3)²-3a(3-a)+4(a-3)]
=2a (a-3)[(a-3)+3a+4]
=2a (a-3)[4a+1]
3.24xy²z²(x+y-z)-32xyz(z-x-y)²+8xyz³(z-x-y)
=8xyz[3yz(x+y-z)-4(z-x-y)²+z2(z-x-y)]
= 8xyz(x+y-z)[3yz+4(z-x-y)-z2]
是练习册上的你们学校上的好慢啊
谁帮我出20个八年级上册的因式分解题吧.
因式分解题 快帮我 (19 20:28:38)1. (x+y) ²(x-y)+(x+y)(x-y)²2. 2a(a-3)²-6a²(3-a)+8a(a-3) 3. 24xy²z²(x+y-z)-32xyz(z-x-y)²+8xyz³(z-x-y)
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