Mathematics
b2 - ac - bc + ab =
(a + b)(b - c)
(b - a)(b - c)
(a - b)(b + c)
(a - b)(b - c)
Factorisation
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Answer
Given,
⇒ b2 - ac - bc + ab
⇒ b2 + ab - ac - bc
⇒ b(b + a) - c(a + b)
⇒ (a + b)(b - c).
Hence, option 1 is correct option.
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