问题
解答题
利用分解因式简便运算:
(1)10012-9992
(2)3.282-1.28×6.56+1.282.
答案
(1)10012-9992
=(1001+999)
=2000;
(2)3.282-1.28×6.56+1.282
=(3.28-1.28)2
=4.
利用分解因式简便运算:
(1)10012-9992
(2)3.282-1.28×6.56+1.282.
(1)10012-9992
=(1001+999)
=2000;
(2)3.282-1.28×6.56+1.282
=(3.28-1.28)2
=4.