简便计算,急用!49.9^2+9.98+0.1^2急用!

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简便计算,急用!49.9^2+9.98+0.1^2急用!简便计算,急用!49.9^2+9.98+0.1^2急用!简便计算,急用!49.9^2+9.98+0.1^2急用!49.9^2+9.98+0.1^

简便计算,急用!49.9^2+9.98+0.1^2急用!
简便计算,急用!
49.9^2+9.98+0.1^2
急用!

简便计算,急用!49.9^2+9.98+0.1^2急用!
49.9^2+9.98+0.1^2
=49.9^2+2*49.9*0.1+0.1^2
=(49.2+0.1)^2=2500

49.9^2+9.98+0.1^2
=49.9^2+2*49.9*0.1+0.1^2
=[49.9+0.1]^2
=50^2
=2500

49.9^2+9.98+0.1^2
=(49.9+0.1)^2
=50^2
=2500