简便计算:1.50.6²-49.4²2.56²-88×56+44²
过程
唐来钢回答:
:1.50.6²-49.4²
=(50.6+49.4)(50.6-49.4)
=100*1.2
=120
2.56²-88×56+44²
=(56-44)^2
=12^2
=144
相关文章:
简便计算:1.50.6²-49.4²2.56²-88×56+44²
过程
唐来钢回答:
:1.50.6²-49.4²
=(50.6+49.4)(50.6-49.4)
=100*1.2
=120
2.56²-88×56+44²
=(56-44)^2
=12^2
=144