Find factor of (9x²-1)-(1+3x)²
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(9x²-1)-(1+3x)²
= (9x²-1+1+3x){9x²-1-(1+3x)}
= (9x²+3x)(9x²-1-1-3x)
= (9x²+3x)(9x²-2-3x) Ans.
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find the above attached pic to get the answer....
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