Question

facrorize (3a+1)^2-(a-1)^2

Answer 1

HERE IS UR ANS IN THE PIC


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Answer 2

a² - b² = (a + b) (a - b)

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(3a + 1)² - (a - 1)²

= [ (3a + 1) + (a - 1) ] [ (3a + 1) - (a - 1) ]

= [ 3a + 1 + a - 1 ] [ 3a + 1 - a + 1 ]

= [4a ] [ 2a + 2]

= 8a (a + 1)

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Answer: 8a (a + 1)