Question

Simplify:  (a + b + c) (a +b - c)​

Answer 1

Answer:

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

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

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

= a² + ab - ac + ba + b² - bc + ca + cb - c²

= a² + ab - ac + ab + b² - bc + ac + bc - c²

= a² + b² - c² + ab + ab - bc + bc - ac + ac

= a² + b² - c² + 2ab ( Answer)...

Step-by-step explanation:

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