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ICS Computer Science Class 11 | How computer can be useful in medical field | Lecture 50 | chapter 4
![Prove that |[a - b - c, 2a, 2a],[2b, b - c - a, 2b],[2c, 2c, c - a - b]| = (a + b +c)^3](http://i.ytimg.com/vi/F6Kll3fQIB0/mqdefault.jpg "Prove that |[a - b - c, 2a, 2a],[2b, b - c - a, 2b],[2c, 2c, c - a - b]| = (a + b +c)^3")
![Prove that |[a, a, ax + by],[b, c, bx + cy],[ax + by, bx + cy, 0]| = (b^2 - ac)(ax^2 + 2bxy + cy^2)](http://i.ytimg.com/vi/AbxjYbwz220/mqdefault.jpg "Prove that |[a, a, ax + by],[b, c, bx + cy],[ax + by, bx + cy, 0]| = (b^2 - ac)(ax^2 + 2bxy + cy^2)")
