已知2x²+12x+18=0,(3y+4)²=(y-4)²,求代数式4x²-12
已知x²-4x-1=0,求代数式(2x-3)²-(x+y)(x-y)-y²的值
已知x²-4x-1=0求代数式(2x-3)²-(x+y)(x-y)-y²的值
已知2x²+12x+18=0,(3y+4)²=(y-4)²,求代数式4x²-12
已知x²+y²+5=2x+4y,求代数式(2x²-(x+y)(x-y))x((x+y-1)
已知2x-y=10,求代数式[(x²+y²)-(x-y)²+2y(x-y)]÷4y的值?
已知x²-4x-1=0,求代数式(2x-3)²-(x+y)(x-y)-y²求大神帮忙
已知:x²-6xy+9y²=0,求代数式3x+5y/4x²-y²×(2x+y)的
4/X+1/Y=2,XY=-1,求代数式4Y-X/X-2Y/(x+2y-12Y²/x-2y)的值
已知x²-4x+4+|y+3|=0,求代数式(x-1/2-1)(x-1/2+1)-(x-1/2y-1)
已知2x+y=4,求代数式[(x+y)2-(x-y)2-2y(x-12
已知2x-y/x+3y=2,求代数式4x-2y/x+3y减4x+12y除以2x-y
已知2x-y/x+3y=2,求代数式4x-2y/x+3y减4x+12y/2x-y的值