Question

subtract 4c(-a+4b+c) from 3a(a+b+c)-5b(a-b+c)​

Answer 1

4c (-a + 4b + c ) from 3a (a + b+c) - 5b ( a-b + c)

=> 3a(a+b+c) -5b(a - b + c) - 4c (-a + 4b +c)

=> 3a² + 3ab + 3ac - 5ab + 5b² - 5bc + 4ac - 16bc - 4c²

=> 3a² + 5b² - 4c² + 3ab - 5ab + 3ac + 4ac - 5bc - 16bc

=> 4a² - 2ab + 7ac - 21bc

ANS : 4a² - 2ab + 7ac - 21bc

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Answer 2

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