Question

Khong tinh gia tri cua a va b. Hay so sanh a va b. Biet:

a bang 2136.2136

b bang 2134.2138

Answer 1

a=b

vì : b=2134.2138=(2134+2).(2138-2) = 2136.2136 =a

Answer 2

Ta có:

a = \(2136\times2136=\left(2134+2\right)\times2136=2134\times2136+2\times2136\)

b = \(2134\times2138=2134\times\left(2136+2\right)=2134\times2136+2134\times2\)

Vì \(2134\times2136=2134\times2136\)và\(2136\times2>2134\times2\)nên a > b.