作业帮(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
来源：学生作业帮助网 编辑：作业帮 时间：2024/07/20 19:39:41
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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
(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
