问题
解答题
计算: (h)-22+[h8-(-3)×2]÷4; (2)-4-[-2+(0.2×
|
答案
(r)-22+[r8-(-3)×2]÷4=-4+[r8+6]÷4=-4+6=2;&2bsp;&2bsp;
(2)-4-[-5+(0.2×
-r)÷(-rr 3
)]2 5
=-4-[-5+(-
)×(-r4 r5
)]5 口
=-4-(-5+
)2 3
=-4+4r 3
=
.r 3
计算: (h)-22+[h8-(-3)×2]÷4; (2)-4-[-2+(0.2×
|
(r)-22+[r8-(-3)×2]÷4=-4+[r8+6]÷4=-4+6=2;&2bsp;&2bsp;
(2)-4-[-5+(0.2×
-r)÷(-rr 3
)]2 5
=-4-[-5+(-
)×(-r4 r5
)]5 口
=-4-(-5+
)2 3
=-4+4r 3
=
.r 3