4-12(x-y)+9(x+y)^2RT分解因式
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4-12(x-y)+9(x+y)^2RT分解因式4-12(x-y)+9(x+y)^2RT分解因式4-12(x-y)+9(x+y)^2RT分解因式4-12(x-y)+9(x+y)^2=[3(x+y)]^
4-12(x-y)+9(x+y)^2RT分解因式
4-12(x-y)+9(x+y)^2
RT
分解因式
4-12(x-y)+9(x+y)^2RT分解因式
4-12(x-y)+9(x+y)^2
=[3(x+y)]^2-12xy+2^2
=[3(x+y)-2]^2
=(3x+3y-2)^2
4-12(x-y)+9(x+y)^2RT分解因式
因式分解2x(x-y)^4 - x²(x-y)² + xy(y-x)²RT
已知x^2+y^2=2x+4y求x*y最小值RT
9x²-y²-4y-4因式分解RT
已知:x+9y=y-3x,求(x^2-y^2)/(x^2+y^2)的值RT
RT,若(√2x-y)+y^2+4y+4=0,求[(x-y)^2+(x+y)(x-y)]÷2x的值
4(x+y)^2-12(x+y)(x-y)+9(+y)^2因式分解,
(x+2y)(3x^2+4y^2)-(x+2y)^2(x+2y) )RT这才是对的!(x+2y)(3*x^2+4*y^2)-(x+2y)^2 *(x-2y)
4+12(x-y)+9(x-y)^
9(x-y)-12(y-x)^2
已知圆c1:x^2+y^12-4x-6y+9=0和圆c2:x^2+y^2+12x+6y+k=0外切 求K的值rt
已知X.x+y.y-4x+2y+5=0,求4X.X-12X Y+9Y.y的值
|2x-y+5|与|3x-2y-2000|互为相反数,则9x-5y=?RT
4-12(x-y)+9(x-y)^2 因式分解
4-12(x-y)+9(x-y)^2因式分解
9(x-y)^2+12(x-y)+4因式分解
9(x-y)^2-12(x-y)+4=快
4+12(x-y)+9(x-y)^2用因式分解