问题
计算题
计算或化简:(1)(﹣3)0+(+0.2)2009×(+5)2010
(2)2(x+4)(x﹣4)
答案
解:(1)(﹣3)0+(+0.2)2009×(+5)2010
=1+(0.2×5)2009×5
=1+5
=6;
(2)2(x+4)(x﹣4)
=2(x2﹣16)
=2x2﹣32.
计算或化简:(1)(﹣3)0+(+0.2)2009×(+5)2010
(2)2(x+4)(x﹣4)
解:(1)(﹣3)0+(+0.2)2009×(+5)2010
=1+(0.2×5)2009×5
=1+5
=6;
(2)2(x+4)(x﹣4)
=2(x2﹣16)
=2x2﹣32.