Mathematics
Factorise :
9a(x - 2y)4 - 12a(x - 2y)3
Factorisation
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Answer
9a(x - 2y)4 - 12a(x - 2y)3
= 3a(3(x - 2y)4 - 4(x - 2y)3)
= 3a(x - 2y)3(3(x - 2y) - 4)
= 3a(x - 2y)3(3x - 6y - 4)
Hence,9a(x - 2y)4 - 12a(x - 2y)3 = 3a(x - 2y)3(3x - 6y - 4)
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