Question

simplify (a+b+c)(a+b-c)
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Answer 1

Answer:

a²+b²-c²+2ab

Step-by-step explanation:

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

a²+ab-ac+ab+b²-bc+ac+bc-c²

a²+b²+c²+ab+ab-ac+ac-bc+bc

a²+b²-c²+2ab

hope it helps..

Answer 2

Answer:

(a+b)^2-c^2

Step-by-step explanation:

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

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

a^2+ab-ac+ab+b^2-bc+ac+bc-c^2

a^2+b^2-c^2+2ab

(a+b)^2-c^2

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