00:01
Hi, from the question given that for option a, root 6 plus root 9, we need to check whether it is a rational or irrational.
00:16
So, this can be written as root 6 plus 3.
00:23
So, this is definitely a irrational.
00:30
Now, for part b, square root of 64 plus 6 by 11.
00:35
So this can be written as 8 plus 6 by 1.
00:38
By level.
00:39
So this is equal to 88 plus 6 divided by level.
00:45
So this can be written as 94 divided by level.
00:50
So this is a rational number.
00:56
And let us move on to see.
00:59
So it is given the square root of 36 plus square root of 21.
01:03
So this is equal to 6 plus square root of 21...