Question

(a^2-b^2)(c^2-d^2)-4bcd​

Answer 1

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Hi ,

It is given that ,

a² + b² - c² - d² + 2ab - 2cd

rearrange the terms ,

= a² + b² + 2ab - c² - d² - 2cd

= ( a² + b² + 2ab ) - ( c² + d² + 2cd )

= ( a + b )² - ( c + d )²

= [ ( a + b ) + ( c + d ) ][ ( a + b) - ( c + d ) ]

= ( a + b + c + d ) ( a + b - c - d )

I hope this helps you.

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Answer 2

Answer:

Step-by-step explanation: