Question

Calcule: a) 20-(1⁴.6+2³) b) 8³-√81:3 c)7.[4+(13-5)²]

Answer 1

Resposta:

a) 20-(1⁴×6+2³)

20-1×6+8

20-6+8

28-6

22

b)8³-V81:3

512-9:3

512-3

509

c)7×[4+(13-5)²]

7×[4+8²]

7×4+64

28+64

92