 Hello and welcome to the session. My name is Mansi and I am going to help you with the following question. The question says, find the distance between the following pairs of points that is 2 minus 1 3 and minus 2 1 3. So let us see the solution behind the question. Before starting this let us see a very important formula that says that if a point p say x1, y1, z1 and the point q, x2, y2, z2 are two points then the distance between them that is pq is given by square root of x2 minus x1 the whole square plus y2 minus y1 the whole square plus z2 minus z1 the whole square. So let us find the distance between these two points. Let the point p be 2 minus 1 3 and the point q be minus 2 1 3. Then we can say that distance between the point p and q that is pq is given by square root of minus 2 minus 2 the whole square plus 1 minus minus 1 that is 1 plus 1 the whole square plus 3 minus 3 the whole square. Now this is equal to square root of now minus 2 minus 2 is minus 4 and square of minus 4 is 16 so 16 plus 1 plus 1 is 2 square of 2 is 4 3 minus 3 is 0 this is equal to square root of 16 plus 4 20 and this can be written as 2 root 5. So our answer to the question is 2 root 5 is the distance between these two given points. So this is our answer to the question. I hope that you understood the question and enjoyed the session. Have a good day.