Question

Tính nhanh, tính hợp lý

347.2²-2²(216+184):8

\(\dfrac{7256\cdot4375-725}{3650+4375\cdot7255}\)

Answer 1

a) Ta có: \(347\cdot2^2-2^2\left(216+184\right):8\)

\(=347\cdot4-4\cdot400:8\)

\(=1388-200=1188\)