Question

(a – b)2 – (b – c )2

Answer 1

Answer:

(a-b)2 - (b-c)2

multiple the equation

that means,

2×a=2a

2×b=2b

2×c=2c

(2a -2b) - (2b-2c)

2a - 2b - 2b + 2c

2a - 4b + 2c

2(a-2b+c)

Answer 2

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