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1.2x^2yz+6xy2.4a(x-y)-b(y-x)3.3(x-y)^2+6(y-x)4.3ax+5by+3bx+2by5.4x^2+4x+16.x^2+2xy+y^2+x+y7.z^2-4x-328.4a^2bc+2b
题目详情
1.2x^2yz+6xy
2.4a(x-y)-b(y-x)
3.3(x-y)^2+6(y-x)
4.3ax+5by+3bx+2by
5.4x^2+4x+1
6.x^2+2xy+y^2+x+y
7.z^2-4x-32
8.4a^2bc+2b
2.4a(x-y)-b(y-x)
3.3(x-y)^2+6(y-x)
4.3ax+5by+3bx+2by
5.4x^2+4x+1
6.x^2+2xy+y^2+x+y
7.z^2-4x-32
8.4a^2bc+2b
▼优质解答
答案和解析
1.2x^2yz+6xy
=2xy(2xz+3)
2.4a(x-y)-b(y-x)
= 4a(x-y)+b(x-y)
=(x-y)(4a+b)
3.3(x-y)^2+6(y-x)
=3(x-y)^2-6(x-y)
=3(x-y)(x-y-2)
4.3ax+5ay+3bx+5by
=a(3x+5y)+b(3x+5y)
=(a+b)(3x+5y)
5.4x^2+4x+1
=(2x+1)^2
6.x^2+2xy+y^2+x+y
=(x+y)^2+x+y
=(x+y)(x+y+1)
7.x^2-4x-32
=(x-8)(x+4)
8.4a^2bc+2b
=2b(2a^2c+1)
=2xy(2xz+3)
2.4a(x-y)-b(y-x)
= 4a(x-y)+b(x-y)
=(x-y)(4a+b)
3.3(x-y)^2+6(y-x)
=3(x-y)^2-6(x-y)
=3(x-y)(x-y-2)
4.3ax+5ay+3bx+5by
=a(3x+5y)+b(3x+5y)
=(a+b)(3x+5y)
5.4x^2+4x+1
=(2x+1)^2
6.x^2+2xy+y^2+x+y
=(x+y)^2+x+y
=(x+y)(x+y+1)
7.x^2-4x-32
=(x-8)(x+4)
8.4a^2bc+2b
=2b(2a^2c+1)
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