4x^2 - 5x+ 1 plzz answer the question if u don't know the answer so there is no need to write that i don't know and all that don't be foolish
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firstly we need to multiply 4 to 1 so to do middle term spilt
therefore, 4x^2 - (4+1)x+1
= 4x^2 - 4x-1x+1
= (4x^2-4x) - (x-1)
= 4x(x-1) - 1(x-1). (taking common)
= (x-1)(4x-1)
note : sign change is to be done very carefully
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