Question

5. Efectuati calculele:
a) (-2)2 – 3° +(-3)1 =
b) (-3)2 + (-3)3 + (-3)4 =
c) [(-4)2 + (-3).5+(-1)7' =
d) | - 511-51°.(-5)4 =
e) (-2)°.(-2).(-2).(-2).(-2)*=

Vă rog repede!​

Answer 1

Răspuns:

Explicație pas cu pas:

Answer 2

a) (-2) × 2 - 3 + (-3) × 1 =

-4 - 3 - 3 =

- (4 + 3 + 3) =

- (7 + 3) =

-10

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b) (-3) × 2 + (-3) × 3 + (-3) × 4 =

- 3 × 2 - 3 × 3 - 3 × 4 =

- 3 × (2 + 3 + 4) =

- 3 × 9 =

-27

______________________

c) [(-4) × 2 + (-3) × 5 + (-1) × 7] =

- 8 - 15 - 7 =

- (8 + 15 + 7) =

-30

______________________

d) - 511 - 51 × (-5) × 4 =

-511 + 1020 =

509

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e) (-2) × (-2) × (-2) × (-2) × (-2) =

- (2 × 2 × 2 × 2 × 2) =

-2⁵ = -32