数学分解因式
1.(m-n)-(m-n)²2.(a-b)(c+d)-(a-b)(c-d)3.2x(x+y)²+2y(Y+X)²+(x+y)³4....
1 . (m-n)-(m-n)²
2. (a-b)(c+d)-(a-b)(c-d)
3. 2x (x+y)²+2y(Y+X)²+(x+y)³
4. 3x(x-2)-2+(2-x)²+x
要过程 展开
2. (a-b)(c+d)-(a-b)(c-d)
3. 2x (x+y)²+2y(Y+X)²+(x+y)³
4. 3x(x-2)-2+(2-x)²+x
要过程 展开
展开全部
1.
(m-n)-(m-n)²
=(m-n)[1-(m-n)]
=(m-n)(1-m+n)
2.
(a-b)(c+d)-(a-b)(c-d)
=(a-b)[(c+d)-(c-d)]
=2d(a-b)
3.
2x (x+y)²+2y(Y+X)²+(x+y)³
=(x+y)²(2x+2y+x+y)
=3(x+y)²(x+y)
=3(x+y)³
4.
3x(x-2)-2+(2-x)²+x
=3x(x-2)+(x-2)²+(x-2)
=(x-2)(3x+x-2+1)
=(x-2)(4x-1)
(m-n)-(m-n)²
=(m-n)[1-(m-n)]
=(m-n)(1-m+n)
2.
(a-b)(c+d)-(a-b)(c-d)
=(a-b)[(c+d)-(c-d)]
=2d(a-b)
3.
2x (x+y)²+2y(Y+X)²+(x+y)³
=(x+y)²(2x+2y+x+y)
=3(x+y)²(x+y)
=3(x+y)³
4.
3x(x-2)-2+(2-x)²+x
=3x(x-2)+(x-2)²+(x-2)
=(x-2)(3x+x-2+1)
=(x-2)(4x-1)
展开全部
1 . (m-n)-(m-n)²
=(m-n)[1-(m-n)]
=(m-n)(1-m+n)
2. (a-b)(c+d)-(a-b)(c-d)
=(a+b)[(c+d)-(c-d)]
=(a+b)(c+d-c+d)
=2d(a+b)
3. 2x (x+y)²+2y(Y+X)²+(x+y)³
=2x (x+y)²+2y(x+y)²+(x+y)³
=(x+y)²[2x+2y+(x+y)]
=(x+y)²(2x+2y+x+y)
=(x+y)²(3x+3y)
=3(x+y)²(x+y)
=3(x+y)³
4. 3x(x-2)-2+(2-x)²+x
=3x^2-6x-2+x^2-4x+4+x
=3x^2+x^2+x-6x-4x+4-2
=4x^2-9x+2
=(4x-1)(x-2)
=(m-n)[1-(m-n)]
=(m-n)(1-m+n)
2. (a-b)(c+d)-(a-b)(c-d)
=(a+b)[(c+d)-(c-d)]
=(a+b)(c+d-c+d)
=2d(a+b)
3. 2x (x+y)²+2y(Y+X)²+(x+y)³
=2x (x+y)²+2y(x+y)²+(x+y)³
=(x+y)²[2x+2y+(x+y)]
=(x+y)²(2x+2y+x+y)
=(x+y)²(3x+3y)
=3(x+y)²(x+y)
=3(x+y)³
4. 3x(x-2)-2+(2-x)²+x
=3x^2-6x-2+x^2-4x+4+x
=3x^2+x^2+x-6x-4x+4-2
=4x^2-9x+2
=(4x-1)(x-2)
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展开全部
(m-n)-(m-n)² = (m-n)-(m-n)(m-n)=(m-n)(1-m+n)
(a-b)(c+d)-(a-b)(c-d)=(a-b)(c+d-c+d)=2d(a-b)
2x (x+y)²+2y(Y+X)²+(x+y)³=(x+y)²(3x+3y)
3x(x-2)-2+(2-x)²+x=-(2-x)(3x-2+2-x)+x=x(3+x)
(a-b)(c+d)-(a-b)(c-d)=(a-b)(c+d-c+d)=2d(a-b)
2x (x+y)²+2y(Y+X)²+(x+y)³=(x+y)²(3x+3y)
3x(x-2)-2+(2-x)²+x=-(2-x)(3x-2+2-x)+x=x(3+x)
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1、(m-n)-(m-n)² ???
2、(a-b)(c+d)-(a-b)(c-d)
=ac+ad-bc-bd-(ac-ad-bc+bd)=2ad-2bd=2d(a-b)
3、2x (x+y)²+2y(Y+X)²+(x+y)³
=(x+y)²(2x+2y+x+y)=3(x+y)³
4、3x(x-2)-2+(2-x)²+x
=4x²-9x+2
lz确定没有抄错式子??
2、(a-b)(c+d)-(a-b)(c-d)
=ac+ad-bc-bd-(ac-ad-bc+bd)=2ad-2bd=2d(a-b)
3、2x (x+y)²+2y(Y+X)²+(x+y)³
=(x+y)²(2x+2y+x+y)=3(x+y)³
4、3x(x-2)-2+(2-x)²+x
=4x²-9x+2
lz确定没有抄错式子??
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