Question

2ab + 3 BC - 5 CA, 4 BC -3 a b + 7 C A ,2 ca - ab - 5 b c
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Answer 1

Answer:

-2ab +2bc +4ca

Step-by-step explanation:

grouping the like terms-----

2ab -3ab -ab +3bc + 4bc -5bc +7ca -5ca +2ca

-2ab +2bc +4ca

Answer 2

Answer:

$2ab + 3bc - 5ca + 4bc - 3ab + 7ca + 2ca - ab - 5bc \\ 2ab - 3ab - ab + 3bc + 4bc - 5bc - 5ca + 7ca + 2ca \\ 2ab - 4ab + 7bc - 5bc - 5ca + 9ca \\ - 2ab + 2bc + 4ca \\ 2( - ab + bc + 2ca)$

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