平方完成 演習8
x2 -6x +y2 +2y +2 =0
x2 +y2 -(14/3)x - 7/3 y =0
t2 - { 2y / ( x+1 ) } t + ( 1-x )/( 1+x )
t2 -2at +a2 +4a -4
5( 4t2 -8t +49 )
a2( 2s2 +2st +2t2 -2s -2t +1 )
x2 -3x
x2 +x
(1/9) ( x2 -16x +144 )
11/36 t2 -1/9 t + 1/27
x2 -6x +y2 +2y +2 =0
x2 +y2 -(14/3)x - 7/3 y =0
t2 - { 2y / ( x+1 ) } t + ( 1-x )/( 1+x )
t2 -2at +a2 +4a -4
5( 4t2 -8t +49 )
a2( 2s2 +2st +2t2 -2s -2t +1 )
x2 -3x
x2 +x
(1/9) ( x2 -16x +144 )
11/36 t2 -1/9 t + 1/27