Question

(a-b) (a+b) of STD 8​

Answer 1

Step-by-step explanation:

(a-b)(a+b)

a²-b²

This is your answer.

Hope it helps.

Answer 2

Step-by-step explanation:

1. a2 – b2 = (a – b)(a + b)

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

3. a2 + b2 = (a + b)2 – 2ab

4. (a – b)2 = a2 – 2ab + b2

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

6. (a – b)3 = a3 – b3 – 3ab(a – b)

7. a3 – b3 = (a – b)(a2 + ab + b2)

8. a3 + b3 = (a + b)(a2 – ab + b2)

9. x(a + b) = xa + xb

10. x(a – b) = xa – xb

11. (x – a)(x – b) = x2 – (a + b)x + ab

12. (x – a)(x + b) = x2 + (b – a)x – ab

13. (x + a)(x – b)= x2 + (a – b)x –ab

14. (x + a)(x + b)= x2 + (a + b)x + ab

15. (x + y + z)2 = x2 + y2 + z2 + 2xy + 2yz + 2zx

16. (x – y – z)2 = x2 + y2 + z2 – 2xy + 2yz – 2zx

ALL ALGERRIC FORMULLAS