(1)根号10+2.23-(圆周率)
=3.162+2.23-3.142
=2.25
(2) (-4)x√7+2√6(结果保留三个有效数字)
=(-4)x2.646+2x2.449
=-10.584+4.898
=-5.686
=-5.69
希望楼主能采纳!谢谢!
(1)根号10+2.23-(圆周率)
=3.162+2.23-3.142
=2.25
(2) (-4)x√7+2√6(结果保留三个有效数字)
=(-4)x2.646+2x2.449
=-10.584+4.898
=-5.686
=-5.69
希望楼主能采纳!谢谢!