[tex]\begin{aligned} \bull \ &\sf -355 \times (-40) \\ &= \sf 355 \times 40 \\ &= \boxed{\sf{14.200}} \\ \bull \ &\sf -400 \times 32 \\ &= \sf -(400 \times 32) \\ &= \boxed{\sf{-12.800}} \\ \bull \ &\sf 87 \times (-52) \\ &= \sf -(87 \times 52) \\ &= \boxed{\sf{-4.524}} \end{aligned}[/tex]
┄
⌯ Perkalian bilangan bulat, berlaku:
[tex]\boxed{\begin{aligned}(+)\times(+)=(+)\\(-)\times(-)=(+)\\(+)\times(-)=(-)\\(-)\times(+)=(-) \end{aligned}}[/tex]
⌗SDaze ⋆࿐໋₊
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[tex]\begin{aligned} \bull \ &\sf -355 \times (-40) \\ &= \sf 355 \times 40 \\ &= \boxed{\sf{14.200}} \\ \bull \ &\sf -400 \times 32 \\ &= \sf -(400 \times 32) \\ &= \boxed{\sf{-12.800}} \\ \bull \ &\sf 87 \times (-52) \\ &= \sf -(87 \times 52) \\ &= \boxed{\sf{-4.524}} \end{aligned}[/tex]
┄
⌯ Perkalian bilangan bulat, berlaku:
[tex]\boxed{\begin{aligned}(+)\times(+)=(+)\\(-)\times(-)=(+)\\(+)\times(-)=(-)\\(-)\times(+)=(-) \end{aligned}}[/tex]
⌗SDaze ⋆࿐໋₊