16(a+b)²-4a²
factorise
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>Hereisyouranswer:−
16 ( a - b )² - 4a - 4b
= 16 ( a - b )² - 4 ( a + b )
= 4 [ 4 ( a - b )² - ( a + b ) ]
= 4 [ 4 ( a² - 2ab + b² ) - a - b ]
= 4 [ 4a² - 8ab + 4b² - a - b ]
= 4 [ 4 ( a² + b² ) - ( a + b ) - 8ab ]
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