题目内容
计算和化简:
(1)
(2)
(3)
(4)20102-2008×2012
(1)
(2)
(3)
(4)20102-2008×2012
解:(1)原式=
=
(2)原式=
=
(3)原式=
=
=
=x
(4)原式=20102-(2010-2)(2010+2)
=20102-(20102-4)
=4
=
(2)原式=
=
(3)原式=
=
=
=x
(4)原式=20102-(2010-2)(2010+2)
=20102-(20102-4)
=4
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