Butuh bantuan 3 nomer

Butuh bantuan 3 nomer

Jawaban:

#nomor 8

$3 sqrt{3} + 2 sqrt{3} = (3 + 2) sqrt{3} = sqrt{3}$

#nomor 9

$sqrt{18} + sqrt{8} = sqrt{9 times 2} + sqrt{4 times 2}$

$= 3 sqrt{2} + 2 sqrt{2}$

$= (3 + 2) sqrt{2} = 5 sqrt{2}$

#nomor 10

$5 sqrt{12} - 4 sqrt{27}$

$= 5 sqrt{4 times 3} - 4 sqrt{9 times 3}$

$=( 5 times 2 sqrt{3 } ) - (4 times 3 sqrt{3} )$

$= 10 sqrt{3} - 12 sqrt{3}$

$= (10 - 12) sqrt{3} = - 2 sqrt{3}$

semogaaaa membantuuu……