因式分解:(x+2y)(3x2-4y2)-(x+2y)2(x-2y)=________.1.21a3b-35a2b3=_________.2.3x2yz+15xz2-9xy2z=__________.3.x2-2xy-35y2=(x-7y)( ).4.2x2-7x-15=(x-5)( ).5.20x2-43xy+14y2=(4x-7y)( ).6.18x2-19x+5=( )(2x-1)我要过程 答的好
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因式分解:(x+2y)(3x2-4y2)-(x+2y)2(x-2y)=________.1.21a3b-35a2b3=_________.2.3x2yz+15xz2-9xy2z=__________.3.x2-2xy-35y2=(x-7y)( ).4.2x2-7x-15=(x-5)( ).5.20x2-43xy+14y2=(4x-7y)( ).6.18x2-19x+5=( )(2x-1)我要过程 答的好
因式分解:(x+2y)(3x2-4y2)-(x+2y)2(x-2y)=________.
1.21a3b-35a2b3=_________.
2.3x2yz+15xz2-9xy2z=__________.
3.x2-2xy-35y2=(x-7y)( ).
4.2x2-7x-15=(x-5)( ).
5.20x2-43xy+14y2=(4x-7y)( ).
6.18x2-19x+5=( )(2x-1)
我要过程 答的好加分!急用!
因式分解:(x+2y)(3x2-4y2)-(x+2y)2(x-2y)=________.1.21a3b-35a2b3=_________.2.3x2yz+15xz2-9xy2z=__________.3.x2-2xy-35y2=(x-7y)( ).4.2x2-7x-15=(x-5)( ).5.20x2-43xy+14y2=(4x-7y)( ).6.18x2-19x+5=( )(2x-1)我要过程 答的好
1.21a3b-35a2b3=7a^2b(3ab-5b^2)
2.3x2yz+15xz2-9xy2z=3xz(xy+5z-3y^2)
3.x2-2xy-35y2=(x-7y)(x+5y ).
4.2x2-7x-15=(x-5)( 2x+3 ).
5.20x2-34xy+14y2=(4x-7y)( 5x-2y ).
6.18x2-19x+5=(9x-5 )(2x-1)