Hasil dari ... √128 - 3√50 + 4√8 - 3√18 adalah ....

hasilnya yaitu -8√2
caranya yaitu :
-> √128 - 3√50 + 4√8 - 3√18
= 8√2 - 15√2 + 8√2 - 9√2
= - 8√2 ( D)
SEMOGA MEMBANTU

[tex] \sqrt{128} - 3 \sqrt{50} + 4 \sqrt{8} - 3 \sqrt{18} \\ = \sqrt{64 \times 2} - 3 \sqrt{25 \times 2} + 4 \sqrt{2 \times 4} - 3 \sqrt{9 \times 2} \\ = \sqrt{64} \times \sqrt{2} - 3 \sqrt{25} \times\sqrt{2} + 4 \sqrt{2} \times \sqrt{4} - 3 \sqrt{2} \times \sqrt{9} \\ = 8 \sqrt{2} - 15 \sqrt{2} + 8 \sqrt{2} + 8 \sqrt{2} - 9 \sqrt{2} \\ = - 8 \sqrt{2} [/tex]
Jawabannya : D.