3x+4y-16=0,5x-6y-33=0
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3x+4y-16=0,5x-6y-33=0
3x+4y-16=0,5x-6y-33=0
3x+4y-16=0,5x-6y-33=0
x=6
y=-0.5
(x+y-5)*(x+y-5)+(x-y+3)=0 x*x-y*y
已知:3x-5y=0,求x/y,x-y/y,x-y/x
{x+y=1 ,xy=-6{x(2x-3)=0,y=x²-1{(3x+4y-3)(3x+4y+3)=0,3x+2y=5{(x-y+2)(x+y)=0,x²+y²=8{(x+y)((x+y-1)=0,(x-y)(x-y-1)=0
方程组 共四题 3x-4y=10 x+2y+2=0 5x+6y=42 7x-4y=-41 3x+4y=16 3x+5y=5 5x-6y=33 3x-4y=23(1)3x-4y=10 (2) x+2y+2=05x+6y=42 7x-4y=-41(3)3x+4y=16 3x+5y=55x-6y=33 (4) 3x-4y=23
初二上学期方程题 4x+y=5 5x+4y=63x-2y=1 2x+3y=13x-2y=7 7x+5y=32x+3y=17 2x-y=-4x+5y=6 2x+y=23x-6y=4 3x+2y=52x+y=73x-4y=53x+y=1x-2y=-1x+y=42x+3y=92x-3y=74x+5y=3x+y=20004x+6y=90003x+5y=113x-2y=42x+3y=215x-2y=5x+y=54x+3y=182x+3y=16x+4y=132x+3y=40x
知x²+4y²-8x-4y+17=0,x平方-5xy+6y平方/x²-16y²÷x-3y/x²-已知x²+4y²-8x-4y+17=0,求x平方-5xy+6y平方/x²-16y²÷x-3y/x²-4y²×x+4y/4y²-x²的值
解下列方程组{4x-3y=5 2x+5y=9 {x+y=2 x-y=0 {x+2y=6 x-2y=-2 {5x-y=16 3x+2y=20 {2x+3y=-7 3x+2y=7
3x+4y=16 5x-6y=33用加减法消去x
{3x+4y-16=0,5x-6y-33=0
3x+4y-16=0,5x-6y-33=0
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,无
已知x^3+xy^2+x+x^2y+y^3+y=0,求5x-6y/3x+4y的值.
已知x.x+y.y-6x-8y+25=0,求3x.x+5y的值
(x-y)的4次方/(y-x)的3次方+(x-y)0的次方*(y-x)+(-x-y)7次方/(x+y)6次方=
1.{x:y:z=3:4:5 2x+3y-5z=-142.{x-y-z=-1 3x+5y+7z=11 4x-y+2z=-13.{x+y=1 x+z=0 2x+y+2z=44.{x-y+z=-3 2x-y-z=-2 -3x+y+z=-15.{x-y+z=-3 3x+y-4z=6 2x+y-z=36.{x-2y+5z=16 2x+y-5z=7 2x-y+z=38
{5(x-3y)-6=2x+1 3(x+6y)+4=9y+19 {3分之2(x-y)=4分之x+y-1 6)x+y)=4(2x-y)+16
[(x+2y)²-(x+y)(3x-y)-5y²]÷(2x),其中x,y满足x²+4x+y²-y+17/4=0已知、x+y=6且xy=4(1)x²+y² (2)(x-y)² (3)x{四次方}+y{四次方}第一题没错 书上就这样写的!