Question

please help me find this factorise ab²+(a-1)b-1​

Answer 1

Answer:

Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation:

→ ab²+b+ab-1

→ b[(ab²÷b) - (b÷b)] + (ab-1)

→  (ab-1)(b+1)