Penjelasan dengan langkah-langkah:
= 87² + 34² - 21² × 2
= 7.569 + 1.156 - 441 × 2
= 7.569 + 1.156 - 882
= 8.725 - 882
= 7.843
87² + 34² - 21² × 2
= ( 87 × 87 ) + 34² - 21² × 2
= 7.559 + ( 34 × 34 ) - 21² × 2
= 7.559 + 1.156 - ( 21 × 21 ) × 2
= 7.559 + 1.156 - 441 × 2
= 7.559 + 1.156 - ( 441 × 2 )
= 7.559 + 1.156 - 882
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Penjelasan dengan langkah-langkah:
= 87² + 34² - 21² × 2
= 7.569 + 1.156 - 441 × 2
= 7.569 + 1.156 - 882
= 8.725 - 882
= 7.843
Penjelasan dengan langkah-langkah:
87² + 34² - 21² × 2
= ( 87 × 87 ) + 34² - 21² × 2
= 7.559 + ( 34 × 34 ) - 21² × 2
= 7.559 + 1.156 - ( 21 × 21 ) × 2
= 7.559 + 1.156 - 441 × 2
= 7.559 + 1.156 - ( 441 × 2 )
= 7.559 + 1.156 - 882
= 8.725 - 882
= 7.843