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Multiply,and then simplify if possible. Assume that all variables represent positive real numbers

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1 Answer

Start out with distributing √2 to the bracket(√2+y√6)
√2*√2+y√2*√6
√4+y√12  Now simplify by bringing out the perfect square numbers.
2+y*2√3
2+2*y√3
 
I hope this helps
 
Memorize this and it really get easy
1^2 = 1  &  √1 = 1
2^2 = 4 & √4 = 2
3^2 = 9  & √9 = 3
4^2 = 16  & √16 = 4
5^2  = 25  & √25 = 5
6^2 = 36  & √36 = 6
7^2  = 49  & √49 = 7
8^2 = 64  & √64 = 8
9^2 = 81  & √81 = 9
10^2 = 100  & √100 = 10
11^2 = 121  & √121 = 11
12^2= 144  & √144 = 12
13^2 = 169  & √169 = 13
14^2 = 196  & √196 = 14
15^2 = 225  & √225 = 15
 
20^2 = 400  & √400 = 20