Question

1. √8 - √20 + 3√45=

2.√42 - 2√13 + √1024 - 3√45=

3. 6√72 - 6√8 + √20 - 3√45=
Tolong banget besok di kumpul

4. √48 - √75 + √363 =

Answer 1

1 √8 - √20 + 3√45
= √4 × √2 - √4 × √5 + 3 √9 × √5
= 2√2 - 2√5 + 3 × 3√5
= 2√2 - 2√5 + 9√5
= 2√2 + 7√5
2 √42 - 2√13 + √1024 - 3√45
= √42 - 2√13 + 32 - 3√9 × √5
= √42 - 2√13 + 32 - 3 × 3√5
= √42 - 2√13 + 32 - 9√5
3 6√72 - 6√8 + √20 - 3√45
= 6√9 × √8 - 6√4 × √2 + √4 × √5 - 3√9 × √5
= 6 × 3√8 - 6 × 2√2 + 2√5 - 3 × 3√5
= 18√8 - 12√2 + 2√5 - 9√5
4 √48 - √75 + √363
= √16 × √3 - √25 × √3 + √121 × √3
= 4√3 - 5√3 + 11√3
= -1√3 + 11√3
= 10√3