(x-3y)(4x+3y)-(2x-3y)^2
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(x-3y)(4x+3y)-(2x-3y)^2
![(x-3y)(4x+3y)-(2x-3y)^2](/uploads/image/z/18124731-27-1.jpg?t=%EF%BC%88x-3y%29%EF%BC%884x%2B3y%EF%BC%89-%EF%BC%882x-3y%EF%BC%89%5E2)
(x-3y)(4x+3y)-(2x-3y)²
=4x²+3xy-12xy-9y²-2x²-6xy+3y²
=2x²-15xy-6y²
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采纳是我前进的动力~
如果您觉得满意,可以点击“采纳为满意答案”哦!
再问: 3Q
再答: You're welcome. If you feel satisfied, you can click "accept as a satisfactory answer"oh! 望采纳!
再问: (n-2n)(m^2-4n^2)(m+2n)
再答: (m+2n)^2(m-2n)^2 =(m+2n)(m-2n)^2 =(m^2-4n^2)^2 =m^4-8m^2n^2+16n^4
再问: 4(a-b)^2-(2a+b)(a-2b)
再答: 4(a-b)²-(2a+b)(a-2b) =4(a²-2ab+b²)-2a²-4ab+a²-2b² =4a²-8ab+2b²-2a²-4ab+a²-2b² =3a²-12ab
再问: (-2)^0+(-1/2)^-1+(1/10)^-1+(1/3)^-2+(1/2)^6
再答: (-2)^0+(-1/2)^-1+(1/10)^-1+(1/3)^-2+(1/2)^6 =1+1/4+1/10+1/9+1/72 =1.475
=4x²+3xy-12xy-9y²-2x²-6xy+3y²
=2x²-15xy-6y²
--------------------------------------------------------------------------------------
采纳是我前进的动力~
如果您觉得满意,可以点击“采纳为满意答案”哦!
再问: 3Q
再答: You're welcome. If you feel satisfied, you can click "accept as a satisfactory answer"oh! 望采纳!
再问: (n-2n)(m^2-4n^2)(m+2n)
再答: (m+2n)^2(m-2n)^2 =(m+2n)(m-2n)^2 =(m^2-4n^2)^2 =m^4-8m^2n^2+16n^4
再问: 4(a-b)^2-(2a+b)(a-2b)
再答: 4(a-b)²-(2a+b)(a-2b) =4(a²-2ab+b²)-2a²-4ab+a²-2b² =4a²-8ab+2b²-2a²-4ab+a²-2b² =3a²-12ab
再问: (-2)^0+(-1/2)^-1+(1/10)^-1+(1/3)^-2+(1/2)^6
再答: (-2)^0+(-1/2)^-1+(1/10)^-1+(1/3)^-2+(1/2)^6 =1+1/4+1/10+1/9+1/72 =1.475
1.((y+2x)(-2x+y)+4(x+2y)^2)/3y 2.(2(x-y)^3-8(x-y)^2(x+y)+6y(
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