(ab+3bc-5ca)by3a²bc
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Answer:
-3a2b2c – 9ab2c2 – 30a2bc2
Step-by-step explanation:
= (-3abc) (ab) + (-3abc) (3bc) + (-3abc) (5ca) = (-3)(a × a × b × b × c) + (- 3 × 3) + (a × b × b × c × c)
= -3a2b2c – 9ab2c2 – 30a2bc2
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