hasil dari [tex]2 \sqrt{50 } +9 \sqrt{8} - (12 \sqrt{18} + 4 \sqrt{32} [/tex] kasih cara nya juga ya

[tex]2 \sqrt{50 } +9 \sqrt{8} - (12 \sqrt{18} + 4 \sqrt{32} )\\ = 2 \sqrt{25 \times 2} + 9 \sqrt{4 \times 2} - (12 \sqrt{9 \times 2} + 4 \sqrt{16 \times 2} ) \\ = 2 \times 5 \sqrt{2} + 9 \times 2 \sqrt{2} - (12 \times 3 \sqrt{2} + 4 \times 4 \sqrt{2} ) \\ = 10 \sqrt{2} + 18 \sqrt{2} - (36 \sqrt{2} + 16 \sqrt{2} ) \\ = 28 \sqrt{2 } - 52 \sqrt{2} \\ = - 24 \sqrt{2} [/tex]