Question

ity (a - b)? = a? - 2ab + b
(c) (698)
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Answer 1

Step-by-step explanation:

(a+b+a+c)(a+b−a−c)

=

(2a+b+c)

(2a+b+c)(b−c)

=b−c

Answer 2

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

$(2a + b + c) \\ (2a +b +c )( b- c \\ b - c$