Question

evaluate = (√5+2√6) + (√8-√2√15)​

Answer 1

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

Answer 2

Answer:

$\sqrt{5}+2\sqrt{6} + 2\sqrt{2} - \sqrt{30} \approx 4.5$

Step-by-step explanation:

$(\sqrt{5}+2\sqrt{6} ) + (\sqrt{8} - \sqrt{2} \cdot \sqrt{15} )$

$(\sqrt{5}+2\sqrt{6} ) + (\sqrt{8} - \sqrt{30} )$

$(\sqrt{5}+2\sqrt{6} ) + (2\sqrt{2} - \sqrt{30} )$

$\sqrt{5}+2\sqrt{6} + 2\sqrt{2} - \sqrt{30} \approx 4.5$