-x²-4y²+4xy 3ax²+6axy+3ay² 9分之m²n²+3分之2mn²那个最后一题最后一点没打出来 题目其实是这样的:9/m²n²+3/2m n三次方+n的四次方
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![-x²-4y²+4xy 3ax²+6axy+3ay² 9分之m²n²+3分之2mn²那个最后一题最后一点没打出来 题目其实是这样的:9/m²n²+3/2m n三次方+n的四次方](/uploads/image/z/2102748-60-8.jpg?t=-x%26sup2%3B-4y%26sup2%3B%2B4xy+3ax%26sup2%3B%2B6axy%2B3ay%26sup2%3B+9%E5%88%86%E4%B9%8Bm%26sup2%3Bn%26sup2%3B%2B3%E5%88%86%E4%B9%8B2mn%26sup2%E9%82%A3%E4%B8%AA%E6%9C%80%E5%90%8E%E4%B8%80%E9%A2%98%E6%9C%80%E5%90%8E%E4%B8%80%E7%82%B9%E6%B2%A1%E6%89%93%E5%87%BA%E6%9D%A5+%E9%A2%98%E7%9B%AE%E5%85%B6%E5%AE%9E%E6%98%AF%E8%BF%99%E6%A0%B7%E7%9A%84%EF%BC%9A9%2Fm%26sup2%3Bn%26sup2%3B%2B3%2F2m+n%E4%B8%89%E6%AC%A1%E6%96%B9%2Bn%E7%9A%84%E5%9B%9B%E6%AC%A1%E6%96%B9)
-x²-4y²+4xy 3ax²+6axy+3ay² 9分之m²n²+3分之2mn²那个最后一题最后一点没打出来 题目其实是这样的:9/m²n²+3/2m n三次方+n的四次方
-x²-4y²+4xy 3ax²+6axy+3ay² 9分之m²n²+3分之2mn²
那个最后一题最后一点没打出来 题目其实是这样的:9/m²n²+3/2m n三次方+n的四次方
-x²-4y²+4xy 3ax²+6axy+3ay² 9分之m²n²+3分之2mn²那个最后一题最后一点没打出来 题目其实是这样的:9/m²n²+3/2m n三次方+n的四次方
-x²-4y²+4xy
=-(x²-4xy+4y²)
=-(x-2y)²
3ax²+6axy+3ay²
=3a(x²+2xy+y²)
=3a(x+y)²
9分之m²n²+3分之2mn²
=9分之mn²(m+6)
-x²-4y²+4xy=-(x-2y)²
3ax²+6axy+3ay² =3a(x+y)²
m²n²/9+2mn²/ 3=mn²(m+6)/ 9
-x²-4y²+4xy
=-(x²+(2y)²-4xy )
=-(x-2y)²
3ax²+6axy+3ay²
=3a(x²+2xy+y²)
=3a(x+y)²
m²n²/9+2mn² /3
=mn²(m+6)/9
-x²-4y²+4xy
=-(x²+4y²-4xy)
=-(x+y)²
3ax²+6axy+3ay²
=3a(x²+2xy+y²)
=3a(x+y)²
9分之m²n²+3分之2mn²
=m²n²+6mn²
=mn²(m+6)
-x²-4y²+4xy
=-(x²-4xy+4y²)
=-[x²-2×2xy+(2y)²]
=-(x-2y)²
=-(x-2y)(x-2y)
3ax²+6axy+3ay²
=3a(x²+2xy+y² )
=3a(x+y)²...
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-x²-4y²+4xy
=-(x²-4xy+4y²)
=-[x²-2×2xy+(2y)²]
=-(x-2y)²
=-(x-2y)(x-2y)
3ax²+6axy+3ay²
=3a(x²+2xy+y² )
=3a(x+y)²
=3a(x+y)(x+y)
9分之m²n²+3分之2mn²
=9分之m²n²+9分之6mn²
=1/9(m²n²+6mn²)
=1/9mn²(m+6)
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