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Hitunglah. 1. (+8) × (-9) 2. (-7) × (-3) 3. -10 × 6

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Hitunglah.

1.     (+8) × (-9)

2.     (-7) × (-3)

3.     -10 × 6

4.     8 × (-2) × (-4)

5.     (-7)2

6.     -62

Pembahasan:

1.     (+8) × (-9) = -(8 × 9) = -72

2.     (-7) × (-3) = (7 × 3) = 21

3.     -10 × 6 = -(10 × 6) = -60

4.     8 × (-2) × (-4) = 8 × 2 × 4 = 64

5.     (-7)2 = (-7) × (-7) = 7 × 7 = 49

6.     -62 = -(6 × 6) = -36

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