Question

Tính hợp lí:

a) 71. 64+ 32 . (-7) - 13 . 32

Answer 1

\(=71.32.2+32.\left(-7\right)-13.32\)

\(=32.\left[71.2.\left(-7\right).\left(-13\right)\right]\)

\(=32.12922\)

\(=413504\)