Question

Find the value of 45²–6² using the identity (a – b)(a+b) = a²–b²
1)1521
2)1998
3)1989
4)2025​

Answer 1

Answer:

3) 1989

Step-by-step explanation:

45²-6² = (45+6)× (45-6) = 2025-36 =1989

Answer 2

Answer:

option 3 is correct

Step-by-step explanation:

Let 45 be a

and, 6 be b

=(45-6)(45+6)

=39×51

=1989