Question

Add : a - b +ab, b - c+bc, c - a+ac

Answer 1

Answer:

ANSWER IS ab+bc+ca

Step-by-step explanation:

$(a - b + ab) + (b - c + bc) + (c - a + ca) \\ a - b + ab + b - c + bc + c - a +ac \\ a - a - b + b - c + c + ab + bc + ca \\ ab + bc + ca$

-b se +b cancel

-c se +c "

a-a "

ac and ca means same

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