Question

Simplify the following
1. √45-3√20+4√5
2. 3√3+2√27+7÷√3
3. 3√32-2√50+4√128
4. √24÷8+√54÷9
5. (4+√5) (√3-√7) 6. 5√12-3√48+7√108

Answer 1

Step-by-step explanation:

1.

• √45-3√20+4√5
• √5×3×3-3√2×2×5+4√5
• 3√5-6√5+4√5
• 7√5-6√5
• √5

Answer 2

Answer:

1.√45-3√20+4√5

√9*5-3√4*5+4√5

√9√5-3√4√5+4√5

3√5-3*2√5+4√5

3√5-6√5+4√5

7√5-6√5

√5