4x²-y²+6x-3y=0怎么化简成(2x-y)(2x+y+3)=0?
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4x²-y²+6x-3y=0怎么化简成(2x-y)(2x+y+3)=0?
①4x²-y²+6x-3y=0怎么化简成(2x-y)(2x+y+3)=0?
②x²+6xy+9y²+3x+9y-4=0怎么化为(x+3y+4)(x+3y-1)=0
①4x²-y²+6x-3y=0怎么化简成(2x-y)(2x+y+3)=0?
②x²+6xy+9y²+3x+9y-4=0怎么化为(x+3y+4)(x+3y-1)=0
4x²-y²+6x-3y=0
(4x²-y²)+(6x-3y)=0
(2x+y)(2x-y)+3(2x-y)=0
(2x-y)(2x+y+3)=0
x²+6xy+9y²+3x+9y-4=0
(x²+6xy+9y²)+(3x+9y)-4=0
(x+3y)²+3(x+3y)-4=0
[(x+3y)+4][(x+3y)-1]=0
(x+3y+4)(x+3y-1)=0
(4x²-y²)+(6x-3y)=0
(2x+y)(2x-y)+3(2x-y)=0
(2x-y)(2x+y+3)=0
x²+6xy+9y²+3x+9y-4=0
(x²+6xy+9y²)+(3x+9y)-4=0
(x+3y)²+3(x+3y)-4=0
[(x+3y)+4][(x+3y)-1]=0
(x+3y+4)(x+3y-1)=0
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