Penjelasan dengan langkah-langkah:
30² + 90² - 70²
= (30 × 30) + (90 × 90) - (70 × 70)
= 900 + 8.100 - 4.900
= 9.000 - 4.900
= 4.100
Jawaban:
30²
= 30 × 30
= 900
90²
= 90 × 90
= 8.100
70²
= 70 × 70
= 4.900
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Penjelasan dengan langkah-langkah:
30² + 90² - 70²
= (30 × 30) + (90 × 90) - (70 × 70)
= 900 + 8.100 - 4.900
= 9.000 - 4.900
= 4.100
Jawaban:
30²
= 30 × 30
= 900
90²
= 90 × 90
= 8.100
70²
= 70 × 70
= 4.900
Maka:
30² + 90² - 70²
= 900 + 8.100 - 4.900
= 9.000 - 4.900
= 4.100