Question

tính nhanh

a)34^2+66^2+68.66

b)74^2+24^2-48.74

Answer 1

a)34^2+66^2+68.66 
=34^3+2.34.66+66^2 
=(34+66)^2 
=100^2=10000 

b)74^2+24^2-48.74 
=74^2-2.74.24+24^2 
=(74-24)^2 
=50^2=2500

Answer 2

a) \(34^2+66^2+68.66=34^2+2.34.66+66^2=\left(34+66\right)^2=10000\)