Question

1. Write any 6 identities which you used in the chapter polynomials.​

Answer 1

Answer:

1. (a + b + c)2 = a2 + b2 + c2 + 2ab + 2bc + 2ca

2. (a + b)3 = a3 + 3a2b + 3ab2 + b

3. (a − b)3 = a3 − 3a2b+ 3ab2 − b

4. (a)3 + (b)3 = (a + b)(a2 − ab + b2)

5. (a)3 − (b)3 = (a − b)(a2 + ab + b2)

6. (a)3 + (b)3 + (c)3 − 3abc = (a + b + c)(a2 + b2 + c2 − ab − bc−ca)