Question

simlify (a+b+c)(a+b-c).

step by step plz ​

Answer 1

Answer:

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Answer 2

Answer:

(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+ab+ab+bc-bc+ac-ac

=> a2+b2-c2+2ab (+a-a=0)

Step-by-step explanation:

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