Question

Factorise:
ab2+(a−1)b−1

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Answer 1

Answer:

b+1)(ab-1)

Step-by-step explanation:

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Answer 2

Answer:

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$a {b}^{2} + (a - 1)b - 1 \\ = a {b}^{2} + ab - b - 1 \\ = ab(b + 1) - 1(b - 1) \\ = (b + 1)(ab - 1)$