Question

Using suitable identity find the value of 61^2 - 59^2

Answer 1

Answer:

sintheformof

(a−b)

2

=a

2

+b

2

−2ab

byapplyingformulaweget

61

2

+59

2

−2(61)(59)

3721+3481−7198

7202−7198=4

Answer 2

Answer:

(60 +1)²-(60-1)²;

(60)²-(1)²;

3600-1;

3599