factorise -15 a^2 b c^3 ÷ 3ab
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Step-by-step explanation:
ANSWER
ab(a+b)
2
−3ab(a+b)
⇒ab[(a+b)
2
−3(a+b)]
⇒
ab(a+b)[a+b−3]
∴
ab(a+b)
2
−3ab(a+b)=ab(a+b)(a+b−3)
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