Question

Using the identities evaluate 63x57​

Answer 1

Answer:

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.

Step-by-step explanation:

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