গুণফল নির্ণয়ের সূত্র
1. (x+a) (x+b) = x2 + (a+b)x + ab
2. (x+a) (x−b) = x2 + (a-b)x – ab
3. (x-a) (x+b) = x2 – (a-b)x – ab
4. (x-a) (x-b) = x2 – (a+b)x + ab
5. (x+a) (x+b) (x+c) = x2 + (a+b+c) x2 + (ab+be+ca)x + abc
1. (x+a) (x+b) = x2 + (a+b)x + ab
2. (x+a) (x−b) = x2 + (a-b)x – ab
3. (x-a) (x+b) = x2 – (a-b)x – ab
4. (x-a) (x-b) = x2 – (a+b)x + ab
5. (x+a) (x+b) (x+c) = x2 + (a+b+c) x2 + (ab+be+ca)x + abc