12 एक्स की पावर 2-7एक्स प्लस वन
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12x²-7x+1
= 12x²-(3+4)x+1 (by splitting the middle term)
= 12x²-3x-4x+1
= 3(4x-1)1(4x-1)
= (4x-1)(3+1)
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