问题
计算题
计算: (1)(m+1)(m2+1)(m﹣1)
(2)[(x+1)(x﹣3)+3]÷x.
答案
解:(1)原式=(m+1)(m2+1)(m﹣1)=m4﹣1;
(2)解:原式=[(x+1)(x﹣3)+3]÷x,
=(x2﹣3x+x﹣3+3)÷x,
=(x2﹣2x)÷x
=x﹣2.
计算: (1)(m+1)(m2+1)(m﹣1)
(2)[(x+1)(x﹣3)+3]÷x.
解:(1)原式=(m+1)(m2+1)(m﹣1)=m4﹣1;
(2)解:原式=[(x+1)(x﹣3)+3]÷x,
=(x2﹣3x+x﹣3+3)÷x,
=(x2﹣2x)÷x
=x﹣2.