(a-b)²+3(a-b)-10 m²/4+mn+n²=2x三次y+8x²y²+8xy三次=3x三次-12x²+12x=还有这三题.TUT如果回答好加悬赏TUT
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![(a-b)²+3(a-b)-10 m²/4+mn+n²=2x三次y+8x²y²+8xy三次=3x三次-12x²+12x=还有这三题.TUT如果回答好加悬赏TUT](/uploads/image/z/7106376-48-6.jpg?t=%28a-b%29%26%23178%3B%2B3%28a-b%29-10+m%26%23178%3B%2F4%2Bmn%2Bn%26%23178%3B%3D2x%E4%B8%89%E6%AC%A1y%2B8x%26%23178%3By%26%23178%3B%2B8xy%E4%B8%89%E6%AC%A1%3D3x%E4%B8%89%E6%AC%A1-12x%26%23178%3B%2B12x%3D%E8%BF%98%E6%9C%89%E8%BF%99%E4%B8%89%E9%A2%98.TUT%E5%A6%82%E6%9E%9C%E5%9B%9E%E7%AD%94%E5%A5%BD%E5%8A%A0%E6%82%AC%E8%B5%8FTUT)
(a-b)²+3(a-b)-10 m²/4+mn+n²=2x三次y+8x²y²+8xy三次=3x三次-12x²+12x=还有这三题.TUT如果回答好加悬赏TUT
(a-b)²+3(a-b)-10
m²/4+mn+n²=
2x三次y+8x²y²+8xy三次=
3x三次-12x²+12x=
还有这三题.TUT如果回答好加悬赏TUT
(a-b)²+3(a-b)-10 m²/4+mn+n²=2x三次y+8x²y²+8xy三次=3x三次-12x²+12x=还有这三题.TUT如果回答好加悬赏TUT
(a-b)²+3(a-b)-10
=(a-b+5)(a-b-2)
m²/4+mn+n²
=(1/4)(m²+4mn+4n²)
=(1/4)(m+2n)²
2x三次y+8x²y²+8xy三次
=2xy(x²+4xy+4y²)
=2xy(x+2y)²
3x三次-12x²+12x
=3x(x²-4x+4)
=3x(x-2)²
(a-b)²+3(a-b)-10 =(a-b)²+(5-2)(a-b)+5×(-2)=【(a-b)+5】【(a-b)-2】
m²/4+mn+n²=(m/2)²+2×(m/2)×n+n²=(m/2+n)²
2x³y+8x²y²+8xy³=2xy(x²+4xy+(2y)²)=2xy(x+2y)²
3x³-12x²+12x=3x(x²-4x+4)=3x(x-2)²