Question

Factorise- 1 - 4a^2 + 4ab - b^2 (^2 means 2 square)

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Factorise -

1 - 4a² + 4ab - b²

Solution -

1 - 4a² + 4ab - b²

=> 1 - ( 4a² - 4ab + b² )

=> 1 - [ ( 2a )² + ( b )² - 2 ( 2a )( b ) ]

=> 1 - [ 2a - b ] ²

=> 1² - ( 2a - b )²

=> ( 1 + 2a - b )( 1 - 2a + b ) .

Answer -

=> ( 1 + 2a - b )( 1 - 2a + b ) .

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