Factorise : 4x2 – 21x + 27
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Answer:
(4x-9) (x-3)
Step-by-step explanation:
4x2 -21x +27
or, 4x2 - 12x - 9x +27
or, 4x(x-3) -9(x-3)
or, (x-3) (4x-9)
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