 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 minus 1, 3, minus 4 and 1, minus 3, 4. Before starting with the solution let us see the key idea behind the question that is if the point P x1, y1, z1 and the point Q x2, y2, z2 are two points then the distance between them with P Q 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 using this key idea we find out the solution to this question. So let the point P be minus 1, 3, minus 4 and the point Q be 1, minus 3, 4 then we can say that P Q that is the distance between P and Q is given by square root of 1 minus minus 1 the whole square plus minus 3 minus 3 the whole square plus 4 minus minus 4 the whole square. Let us simplify this we get square root minus 1 is 1 plus 1 that is 2 and square of 2 is 4 plus minus 3 minus 3 is minus 9 and square we see that minus 3 minus 3 is minus 6 and square of minus 6 is 36 plus 4 minus minus 4 that is 4 plus 4 is 8 and square of 8 is 64 so we add 64 here that is equal to square root of 104 that is equal to 2 root 26. So we can say that our answer to this question is that distance between these two points is 2 root 26. So I hope that you understood the question and enjoyed the session. Have a good day.