Question

Using identities, evaluate the following
I.61 square​

Answer 1

Step-by-step explanation:

(61 59)?

this is in the form of (a - b)2 = a + b2 - 2ab by applying formula we get 612 + 592 – 2(61)(59) 3721 + 3481

– 7198

72027198 = 4