Question

Thực hiện phép tính :

a) \(3^6:3^2+2^3.2^2\)

b) \(\left(39.42-37.42\right):42\)

Answer 1

a, \(3^6:3^3+2^3.2^2\\ =3^3+2^5=27+32=59\)

b, \(\left(39.42-37.42\right):42\\ =42.\left(39-37\right):42\\ =39-37=2\)

Answer 2

a, 3⁶ : 3² + 2³ . 2² = 3⁴ + 2⁵ = 81 + 32 = 113

b, ( 39.42 - 37.42 ) : 42

= 42. ( 39 - 37 ) : 42

= 42 . 2 : 42

= 84 : 42

= 2