tolong di bantu ya,hehe

1)²㏒9 - ²㏒3 + ²㏒4 - ²㏒6
= ²㏒ 3² - ²㏒3 + ²㏒2² - ²㏒(2.3)
= 2²㏒3 - ²㏒3 + 2²㏒2 - (²㏒2 + ²㏒3)
= 2²㏒3 - ²㏒3 + 2²㏒2 - ²㏒2 - ²㏒3
= ²㏒3 + 2 - 1 - ²㏒3
= 1

2)²㏒32 - ²㏒1/8 + ²㏒16
= ²㏒2⁵ - (²㏒ 1 - ²㏒8) + ²㏒2⁴
= 5 - ²㏒1 + ²㏒2³ + 4
= 9 - 0 + 3
=12

3) ²㏒16 + ³㏒21/27 + ⁵㏒125
= ²㏒16 + ³㏒7/9 + ⁵㏒125
= ²㏒2⁴ + (³㏒7 - ³㏒9) + ⁵㏒5³
= 4 + ³㏒7 - ³㏒3² + 3
= 7-2 + ³㏒7
= 5 + ³㏒7
= 4 + 1 + ³㏒7