add :- ab + bc + ca, 2ab - bc and a + 3ab - 4ac
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Answered by
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Answer:
6ab - 3ac + a
Step-by-step explanation:
ab + bc + ca + 2ab - bc + a + 3ab - 4ac
bc - bc = 0
NOW,
ab + + ca + 2ab + a + 3ab - 4ac
2ab + ab = 3ab
= 3ab + ca + a + 3ab - 4ac
3ab + 3ab = 6ab
= 6ab + ca + a - 4ac
ca - 4ac = -3ac
= 6ab - 3ac + a ANSWER
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