Question

Evaluate the following using identities
a)58×62

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Answer 1

(x+a) (x-b) = (60 -2) (60 +2)

Answer 2

Hello Mate!

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a) 58 * 62

Using identity ( x + a )( x + b )

( 60 - 2 )( 60 + 2)

= 60² + ( -2 + 2 )60 + (-2) * 2

= 3600 + (-120) + 120 + (-4)

= 3600 - 120 + 120 - 4

= 3600 - 4

= 3596

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Hope This Helps You!