Question

QUIZ #324

1. 5 + (-4) × (2 + 1) = ...
2. 4 × (-4) ÷ (2 × (-2)) = ...
3. 2² + 2 × (-2) = ...
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Answer 1

5 + (-4) × (2 + 1)

5 - 4 × 3

5 - 12

-7

__________________

4 × (-4) ÷ (2 × (-2))

-16 ÷ ( -4 )

4

__________________

2² + 2 × (-2)

( 2 × 2 ) + ( - 4 )

4 + ( -4 )

4 - 4

0

Answer 2

Penjelasan dengan langkah-langkah:

• 1. 5 + (-4) × (2 + 1) = ...

= 5 + (-4 ) × ( 2 + 1 )

= 5 + (-4) × 3

= 5 + -12

= -7

• 2. 4 × (-4) ÷ (2 × (-2)) = ...

= 4 × (-4) ÷ ( 2 × (-2))

= 4 × (-4) ÷ -4

= -16 ÷ ( -4 )

= 4

• 3. 2² + 2 × (-2) = ...

= 2² + 2 × (-2)

= ( 2 × 2 ) + 2 × (-2)

= 4 + 2 × (-2)

= 4 + (-4)

= 0