Factorise 20x^2 -9x+1
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Answer:
(5x-1)(4x-1)
Step-by-step explanation:
20x²-9x+1
By middle term splitting
20x²-5x-4x+1
By grouping method, we will take 5x as common in first group and 1 as common in second group:
5x(4x-1)-1(4x-1)
(5x-1)(4x-1)
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