问题
计算题
化简: (1)2a﹣(﹣3a+1);
(2)10a2﹣2b﹣4(2a2﹣3b).
答案
(1)解:2a﹣(﹣3a+1)
=2a+3a﹣1
=5a﹣1;
(2)解:10a2﹣2b﹣4(2a2﹣3b)
=10a2﹣2b﹣8a2+12b
=2a2+10b.
化简: (1)2a﹣(﹣3a+1);
(2)10a2﹣2b﹣4(2a2﹣3b).
(1)解:2a﹣(﹣3a+1)
=2a+3a﹣1
=5a﹣1;
(2)解:10a2﹣2b﹣4(2a2﹣3b)
=10a2﹣2b﹣8a2+12b
=2a2+10b.