Here are most important mathematics Formulae for Algebra

1. (a+b)2 = a2 + 2ab + b2

2. (a-b)2 = a2 – 2ab + b2

3. (a+b)2 = (a-b)2 + 4ab

4. (a-b)2 = (a+b)2 – 4ab

5. (a+b)3 = a3+b3+3ab(a+b) = a3+b3+3a2b+3ab2

6. (a-b)3 = a3 – b 3 -3ab(a-b) = a3 – b 3 – 3a2b + 3ab2

7. a 3+b3 =(a+b)3 – 3ab(a+b)

8. a 3 – b 3 =(a-b)3 + 3ab(a-b)

9. a 2 -b 2 = (a-b)(a+b)

10.a 3 +b3 = (a+b)(a2 -ab+b2 )

11. a 3 – b 3 = (a-b)(a2+ab+b2 )

12. a m x an = am+n

13. a m / an = am – n

14. (a/b)(m / n) =(b/a)-(m / n)

15. a m / b – n = am x bn