Question

Simplify : (a+b-c) (a-b+c)​

Answer 1

Answer:

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

a²-b²-c²

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Answer 2

ANSWER : a²-b²-c²+2bc

EXPLANATION :

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

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

= a²-ab+ac+ab-b²+bc - ac + bc-c²

= a²- b²-c²+ 2bc

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