Question

subtract a(a+2b+c) and -b(a-b+2c) from c(-a-b+c)​

Answer 1

Answer:

Step-by-step explanation:

First add both the terms

a² + 2ab + 2ac - ab + b² - 2bc

= a²  + b² + ab + 2bc + 2ac

Now subtract,

-ac -bc + c² - a² -b² -ab -2bc - 2ac

= a²-b²+c² - 3ac-3bc- ab

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