问题:
用适当的方法解下列方程:
(1) x 2-5x-6=0;
(2) (1-x) 2-1=
21
100
;
(3) 8x(x+2)=3x+6;
(4) (y+
5
) (y-
5
) =20.
用适当的方法解下列方程:
(1) x 2-5x-6=0;
(2) (1-x) 2-1=
;
(3) 8x(x+2)=3x+6;
(4) (y+
) (y-
) =20.
(1) x 2-5x-6=0;
(2) (1-x) 2-1=
21 |
100 |
(3) 8x(x+2)=3x+6;
(4) (y+
5 |
5 |
参考答案: