Bentuk sederhana dari 3√18+√98-2√50

Bentuk sederhana dari 3√18+√98-2√50

Jawaban:

$3 sqrt{18} + sqrt{98} - 2 sqrt{50} \ = 3 sqrt{3 times 3 times 2} + sqrt{7 times 7 times 2} - 2 sqrt{5 times 5 times 2} \ = 3 times 3 sqrt{2} + 7 sqrt{2} - 2 times 5 sqrt{2} \ = 9 sqrt{2} + 7 sqrt{2} - 10 sqrt{2} \ = 16 sqrt{2} - 10 sqrt{2} \ = 6 sqrt{2}$