Question

simplify : 179× 179 - 21 × 21 ​

Answer 1

Answer:

179×179 - 21×21

= 32041- 441

= 31600

I hope it helps you..

Answer 2

Answer:

31600

Step-by-step explanation:

For this kind of sum, we can use an identity. We can use the identity (a^2)-(b^2)= (a+b)(a-b). Here, a is 179 and b is 21. So, it will be (179+21)(179-21), which is 200 into 158, which is 31600. Hope it helped you!