How do you do these two problems?
1. -�ã338-�ã200+�ã162=_______
2. 2a2^b�ã363a6^b3^c5^=_____
Assuming ã means √,
√338-√200+√162
= √169√2 - √100√2 + √81√2
= 13√2-10√2+9√2
= 12√2
Do the other in the same way: extract perfect roots, and combine the other factors under a single √