(4分之1-36分之1-6分之12分之1)X(-48)= .(-2)X(-1)- (-2)的平方=
问题描述:
(4分之1-36分之1-6分之12分之1)X(-48)= .(-2)X(-1)- (-2)的平方=
答
(1/4-1/36-1/12/6)×(-48)
=(1/4-1/36-1/72)×(-48)
=(18-2-1)/72×(-48)
=-15×48/72
=-15×2/3
=-10
(-2)×(-1)-(-2)²
=2-4
=-2