Question

05- Determine o valor das expressões numéricas a seguir. a) ( −9 ) 2 − ( +5 ) . ( +16 ) = b) ( −2 ) 4 : ( +16 ) . ( −1 ) 7 = c) ( −6 ) 2 − ( −7 ) 2 + 13 0 = d) 5 2 − ( −3 ) 3 + ( −4 ) 2 = e) 4. ( −5 ) 3 + ( −20 ) 2 =

Answer 1

A )

(-9)²-(+5).(+16) =

81 - (+80)

81 - 80 = 1

B )

(-2)⁴ : (+16).(-1)^7

16 : (+16).(-1)

16 : -16

-1

C ) (−6 )x2 − (−7) x2 + 130

- 12 + 7 x 2 = 130

- 12+14+130=

132

D )

52- (3) +3 (-4) 2 =

52 + 3 x 3 - 8 =

52 + 9 - 8 =

53

E ) 4 x ( −5 ) x 3 + ( −20 ) x 2 =

-60 - 40=

-100=