 Hi, and welcome to the session. Let us discuss the following question. The question says, find the equation of square passing through points 1 minus 3, 4, 1 minus 5, 2, 1 minus 3, 0, and having it centered on the plane, x plus y plus z equals to 0. Now, begin with the solution. Let the equation of square be equation number 1 plus 2 w into 0. Now, this implies 1 e is equal to 0, d is equal to minus 10. This to minus 26, and from 4 we have in this equation. So we get minus. This implies a w is equal to minus 60, and this implies w is equal to equals to 4. 4v plus 4w equal to minus 2. So we have 4v minus 8 equals to 4. This implies 4v is equal to 12, and this implies v is equal to minus v minus w is equal to 0. From here, we can find the value of u, v is equal to 3, and w is equal to minus 2. This implies minus u minus 1 is equal to 0. This implies u is equal to minus 1. Now, to find the value of d, second equation, we have 2u minus 6p plus a w plus d equals to minus 26. u is equal to minus 1, v is equal to 3, and w is equal to minus 1x plus 2 into x to z plus 2 0. Or we can say that x square plus y is complete