Question

Evaluate = (√5+2√6) + (√8-√2√15)​

Answer 1

`√(5)+2√(6) + 2√(2) - √(30) \approx 4.5`

Explanation:

`(√(5)+2√(6) ) + (√(8) - √(2) \cdot √(15) )`

`(√(5)+2√(6) ) + (√(8) - √(30) )`

`(√(5)+2√(6) ) + (2√(2) - √(30) )`

`√(5)+2√(6) + 2√(2) - √(30) \approx 4.5`

Answer 2

Answer: 2√2 + 3√8 = 2√2 + 6√2 = 8√2 , because we simplified √8 = √(4 * 2)