factorise 48a^2b-243b^3
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Answer:
48a^2b-243b^3
=3b(16a^2-81b^2)
=3b{(4a) ^2-(9b) ^2}
=3b(4a+9b)(4a-9b)
Step-by-step explanation:
x^2-y^2=(x+y)(x-y)
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