Simplify the following expression:(ab+bc)(ab−bc)+(bc+ca)(bc−ac)+(c – InterviewSolution

1.	Simplify the following expression:(ab+bc)(ab−bc)+(bc+ca)(bc−ac)+(ca+ab)(ac−ab)
Answer» Simplify the following expression: $(a b + b c) (a b - b c) + (b c + c a) (b c - a c) + (c a + a b) (a c - a b)$

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