问题
解答题
计算: (1)
(2) 0.25×(-2)-2÷(16)-1-(π-3)0. |
答案
(1)
-2 x+1
=1 x-1
=2x-2-x-1 (x+1)(x-1)
,x-3 x2-1
(2)0.25×(-2)-2÷(16)-1-(π-3)0=
×1 4
×16-1=0.1 4
计算: (1)
(2) 0.25×(-2)-2÷(16)-1-(π-3)0. |
(1)
-2 x+1
=1 x-1
=2x-2-x-1 (x+1)(x-1)
,x-3 x2-1
(2)0.25×(-2)-2÷(16)-1-(π-3)0=
×1 4
×16-1=0.1 4