Sederhanakanlah bentuk akar berikut A. 4 √ 2 x 3 √5 B. 10 √5 x 17 √8 C. 18√25

a) 4√2 x 3√5 = 12√10

b) 10√5 x 17√8 = 170√40 = 170 √4.√10 = 170 . 2√10 = 340√10

c) 18√25 = 18(5) = 90

[tex]4 \sqrt{2} *3 \sqrt{5} =(4*3) \sqrt{2*5}=12 \sqrt{10} \\\\10 \sqrt{5} *17 \sqrt{8} =(10*17) \sqrt{5*8} =170 \sqrt{40} =170 \sqrt{4*10} =170*2 \sqrt{10} \\=340 \sqrt{10} \\\\18 \sqrt{25} =18*5=90[/tex]