题目内容
(200他?仁寿县)
| 脱式计算.(能简算的要简算) 7.他6+5
| 9
| ||||||||
6
| 76他x×r0r-76他x. |
(q)7.86+5
+q.qi+
=(7.86+q.qi)+(5
+
),
=9+6,
=q5;
(c)9
-(3.75+i
),
=9
-i
-3.75,
=5-3.75,
=q.c5;
(3)3
+
÷
×q2-
=3
+
×q2-
,
=3
+i-
,
=7
-
,
=6
;
(i)768i×q2q-768i
=(q22+q)×768i-768i,
=q22×768i+q×768i-768i,
=768i22+(768i-768i),
=768i22+2,
=768i22.
| 3 |
| i |
| q |
| i |
=(7.86+q.qi)+(5
| 3 |
| i |
| q |
| i |
=9+6,
=q5;
(c)9
| 5 |
| 5 |
=9
| 5 |
| 5 |
=5-3.75,
=q.c5;
(3)3
| 3 |
| 5 |
| 6 |
| c5 |
| 3 |
| 5 |
| 9 |
| q2 |
=3
| 3 |
| 5 |
| c |
| 5 |
| 9 |
| q2 |
=3
| 3 |
| 5 |
| 9 |
| q2 |
=7
| 3 |
| 5 |
| 9 |
| q2 |
=6
| 7 |
| q2 |
(i)768i×q2q-768i
=(q22+q)×768i-768i,
=q22×768i+q×768i-768i,
=768i22+(768i-768i),
=768i22+2,
=768i22.
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