填空题、计算、因式分解1.(-3/2m+n)(-3/2n-n)=2.(-3/2x--2/3y)^2=3.当x___时,(x-4)度多少___4.若|a-2|+b^2-2b+1=0,则a=__,b=__5.已知a+a/1=3,则a^2+a^2/1的值是___计算1.2x(2/1x^2-1)-3x(3/1x^2+3/2)2.x^2-(x+2)(x-2)-(x+x/1)^23.[(x
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![填空题、计算、因式分解1.(-3/2m+n)(-3/2n-n)=2.(-3/2x--2/3y)^2=3.当x___时,(x-4)度多少___4.若|a-2|+b^2-2b+1=0,则a=__,b=__5.已知a+a/1=3,则a^2+a^2/1的值是___计算1.2x(2/1x^2-1)-3x(3/1x^2+3/2)2.x^2-(x+2)(x-2)-(x+x/1)^23.[(x](/uploads/image/z/10360395-27-5.jpg?t=%E5%A1%AB%E7%A9%BA%E9%A2%98%E3%80%81%E8%AE%A1%E7%AE%97%E3%80%81%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A31.%28-3%2F2m%2Bn%29%28-3%2F2n-n%EF%BC%89%3D2.%EF%BC%88-3%2F2x--2%2F3y%29%5E2%3D3.%E5%BD%93x___%E6%97%B6%2C%EF%BC%88x-4%EF%BC%89%E5%BA%A6%E5%A4%9A%E5%B0%91___4.%E8%8B%A5%7Ca-2%7C%2Bb%5E2-2b%2B1%3D0%2C%E5%88%99a%3D__%2Cb%3D__5.%E5%B7%B2%E7%9F%A5a%2Ba%2F1%3D3%2C%E5%88%99a%5E2%2Ba%5E2%2F1%E7%9A%84%E5%80%BC%E6%98%AF___%E8%AE%A1%E7%AE%971.2x%282%2F1x%5E2-1%29-3x%283%2F1x%5E2%2B3%2F2%292.x%5E2-%28x%2B2%29%28x-2%29-%28x%2Bx%2F1%29%5E23.%5B%28x)
填空题、计算、因式分解1.(-3/2m+n)(-3/2n-n)=2.(-3/2x--2/3y)^2=3.当x___时,(x-4)度多少___4.若|a-2|+b^2-2b+1=0,则a=__,b=__5.已知a+a/1=3,则a^2+a^2/1的值是___计算1.2x(2/1x^2-1)-3x(3/1x^2+3/2)2.x^2-(x+2)(x-2)-(x+x/1)^23.[(x
填空题、计算、因式分解
1.(-3/2m+n)(-3/2n-n)=
2.(-3/2x--2/3y)^2=
3.当x___时,(x-4)度多少___
4.若|a-2|+b^2-2b+1=0,则a=__,b=__
5.已知a+a/1=3,则a^2+a^2/1的值是___
计算
1.2x(2/1x^2-1)-3x(3/1x^2+3/2)
2.x^2-(x+2)(x-2)-(x+x/1)^2
3.[(x+y)^2-(x-y)^2]除以2xy
因式分解
1.3x-12x^3
2.-2a^3+12a^2-18a
3.9a^2(x-y)+4b^2(y-x)
4.(x+y)^2+2(x+y)+1
急
填空题、计算、因式分解1.(-3/2m+n)(-3/2n-n)=2.(-3/2x--2/3y)^2=3.当x___时,(x-4)度多少___4.若|a-2|+b^2-2b+1=0,则a=__,b=__5.已知a+a/1=3,则a^2+a^2/1的值是___计算1.2x(2/1x^2-1)-3x(3/1x^2+3/2)2.x^2-(x+2)(x-2)-(x+x/1)^23.[(x
1.(-3/2m+n)(-3/2n-n)=9/4m^2-n^2
2.(-3/2x-2/3y)^2=9/4x^2+2xy+4/9y^2
3.当x≠4时,(x-4)的0次方=1
4.若|a-2|+b^2-2b+1=0,则a=_2_,b=_1_
5.已知a+a/1=3,则a^2+a^2/1的值是_7__
计算
1.2x(2/1x^2-1)-3x(3/1x^2+3/2)
=x^3-2x-x^3-2x
=-4x
2.x^2-(x+2)(x-2)-(x+x/1)^2
=x^2-x^2+4-x^2-2-x^2/1
=2-x^2-x^2/1
3.[(x+y)^2-(x-y)^2]除以2xy
=[x^2+2xy+y^2-x^2+2xy-y^2]÷2xy
=4xy÷2xy
=2
因式分解
1.3x-12x^3
=3x(1-4x^2)
=3x(1+2x)(1-2x)
2.-2a^3+12a^2-18a
=-2a(a^2-6a+9)
=-2a(a-3)^2
3.9a^2(x-y)+4b^2(y-x)
=(x-y)(9a^2-4b^2)
=(x-y)(3a+2b)(3a-2b)
4.(x+y)^2+2(x+y)+1
=(x+y+1)^2
(-3/2m+n)(-3/2n-n)=(9/4)m²-n²
2.(-3/2x--2/3y)^2=(9/4)x²+2xy+(4/9)y²
3.当x≠1时,(x-4)的零次方等于1
4.若|a-2|+b^2-2b+1=0,则a=2,b=1
5.已知a+a/1=3,则a^2+a^2/1的值是7
1.3x-12x^3
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(-3/2m+n)(-3/2n-n)=(9/4)m²-n²
2.(-3/2x--2/3y)^2=(9/4)x²+2xy+(4/9)y²
3.当x≠1时,(x-4)的零次方等于1
4.若|a-2|+b^2-2b+1=0,则a=2,b=1
5.已知a+a/1=3,则a^2+a^2/1的值是7
1.3x-12x^3
=3x(x+2)(x-2)
2.-2a^3+12a^2-18a
=-2a(a-3)²
3.9a²(x-y)+4b²(y-x)
=(x-y)(3a+2b)(3a-2b)
4.(x+y)^2+2(x+y)+1
=(x+y+1)²
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