Question

1) RESOLVA AS EXPRESSÕES:
A) −30 − 5[ (−1). ( +15 − 3 . 6) + 9 − 3 . 4]
B) −51 + 3.{ 15 − [6(−3 + 8) − 7 . 5]}
C) SENDO A = -4(-5+3) E B = (-6+4)(-9+4:2), CALCULE 2AB

Answer 1

A) −30 − 5[ (−1). ( +15 − 3 . 6) + 9 − 3 . 4]

-35 [ ( -1 ) . ( +15 - 18 ) + 9 - 12 ]

-35 [ ( -1 ) . ( -3 ) -3 ]

-35 [ 3 - 3 ]

-35

B) - 51 + 3.{ 15 − [6(−3 + 8) − 7 . 5]}

- 48.{ 15 - [6 + 5 - 35.] }

-48.{ 15 - [11-35] }

-48.{ 15 - 24 }

-48.-9

432

C) A = -4(-5+3) E B = (-6+4)(-9+4:2)

A= -4-2 B= -2 (-9+2)

A= -6 B= -2 - 7

B= -9

• 2AB

2.(-6).(-9)

2.54

108