1个回答
展开全部
解:
(m²+3m+2)(4m²+8m+3)-90
=(m+1)(m+2)(2m+1)(2m+3) -90
=[(m+1)(2m+3)][(m+2)(2m+1)]-90
=(2m²+5m+3)(2m²+5m+2)-90
=(2m²+5m+2+1)(2m²+5m+2)-90
=(2m²+5m+2)²+(2m²+5m+2)-90
=(2m²+5m+2-9)(2m²+5m+2+10)
=(2m²+5m-7)(2m²+5m+12)
=(m-1)(2m+7)(2m²+5m+12)
(m²+3m+2)(4m²+8m+3)-90
=(m+1)(m+2)(2m+1)(2m+3) -90
=[(m+1)(2m+3)][(m+2)(2m+1)]-90
=(2m²+5m+3)(2m²+5m+2)-90
=(2m²+5m+2+1)(2m²+5m+2)-90
=(2m²+5m+2)²+(2m²+5m+2)-90
=(2m²+5m+2-9)(2m²+5m+2+10)
=(2m²+5m-7)(2m²+5m+12)
=(m-1)(2m+7)(2m²+5m+12)
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询