tolong butuh sekarang
(D). [tex]40 + 6 \sqrt{2} [/tex]
PEMBAHASAN :
[tex](4 \sqrt{8} - 3 \sqrt{2}) \: \sqrt{32} + \sqrt{72} [/tex]
[tex]= (4 \sqrt{4 \times 2} - 3 \sqrt{2}) \: \sqrt{16 \times 2} + \sqrt{36 \times 2} [/tex]
[tex]= (4 \times 2 \sqrt{2} - 3 \sqrt{2}) \: 4 \sqrt{2} + 6 \sqrt{2} [/tex]
[tex]= (8 \sqrt{2} - 3 \sqrt{2}) \: 4 \sqrt{2} + 6 \sqrt{2} [/tex]
[tex]= (5 \sqrt{2}) \: 4 \sqrt{2} + 6 \sqrt{2} [/tex]
[tex]= (5 \times 4)( \sqrt{2 \times 2}) + 6 \sqrt{2} [/tex]
[tex]= 20 \sqrt{4} + 6 \sqrt{2} [/tex]
[tex]= 20 \times 2 + 6 \sqrt{2} = 40 + 6 \sqrt{2} [/tex]
[answer.2.content]
