Question

7: Factorise a? - 2ab + b2 - c2

please solve with pic
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Answer 1

Answer:

(a - b +c)(a - b + c)

Step-by-step explanation:

a² - 2ab + b² - c²

(a - b)² - c²                   [using (a - b)² = a² - 2ab + b² identity]

(a - b + c)(a - b - c)       [using a² - b² identity, a= a-b, b = c]