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﹣(3x+y2) ﹣y2+3x 3x+y2 3x﹣y2
x = 2,y =2 x = 2,y =4 x = 3,y =6 2=3,y=8
若a+3=b-1,则a+9=3b-3 若2x-6=4y-2,则x-3=2y-1 若x2-5=y2+1,则x2-y2=6 若,则2x=3y
x=2,y=2 x=2,y=4 x=3,y=6 x=3,y=8
x = 2,y =2 x = 2,y = 4 x = 3,y =6 x = 3,y = 8
x+3y-4=0 x+3y-10=0 3x-y+4=0 3x-y=0
x=2,y=2 x=2,y=4 x=3,y=6 x=3,y=8
x=2,y=2 x=2,y=4 x=3,y=6 x=3,y=8
, ,则过A.B.及原点O.三点的圆的方程是( ) A.x2+y2+4x﹣3y=0B.x2+y2﹣4x﹣3y=0 x2+y2+4x﹣3y﹣4=0 x2+y2﹣4x﹣3y+8=0
x+y-5=0 x+y-3=0 x-y-1=0 x-y+1=0