Question

Evaluate using suitable identity : 57 x 63​

Answer 1

Answer:

question Is 57*63

57 * 63 = 3591

Answer 2

Question:

Evaluate using suitable identity : 57 x 63

Answer:

3591

Method:

57 × 63

= (60 - 3) (60 + 3)

= 60² - 3² [ (a-b)(a+b) = a² - b²]

= 3600 - 9

= 3591

Hence proven!