© examsiri.com
Question : 85 of 160
Marks:
+1,
-0
Solution:
√12‌−√68+48√2
‌=√12−√(6)2+(4√2)2+2×6×4√2
‌=√12−√(6+4√2)2
‌=√12−6−4√2=√6−4√2
‌=√(2)2+(√2)2−2⋅√2⋅2
‌=√(2−√2)2=2−√2
© examsiri.com
Go to Question: