计算: ①
②-
③±
④±
⑤±
⑥±
⑦
⑧±
⑨
|
①
=13;169
②-
=-6;36
③±
=±5;(-5)2
④±
=±64 81
;8 9
⑤±
=±0.7;0.49
⑥±
=±13 4 9
;11 3
⑦
=7; 49
⑧±
=±5 25
⑨
=6.(±6)2
故答案为:①13;②-6;③±5;④±
;⑤±0.7;⑥±8 9
;⑦49;⑧25;⑨±611 3
计算: ①
②-
③±
④±
⑤±
⑥±
⑦
⑧±
⑨
|
①
=13;169
②-
=-6;36
③±
=±5;(-5)2
④±
=±64 81
;8 9
⑤±
=±0.7;0.49
⑥±
=±13 4 9
;11 3
⑦
=7; 49
⑧±
=±5 25
⑨
=6.(±6)2
故答案为:①13;②-6;③±5;④±
;⑤±0.7;⑥±8 9
;⑦49;⑧25;⑨±611 3