factorize the following:-
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1. first part.
= 3x² -11x + 6
= 3x² - (9+2)x +6
= 3x² - 9x - 2x + 6
= 3x (x - 3) - 2 ( x+ 3)
= (3x - 2) (x - 3)
answer is correct.
2. now second part
= 20x² - x - 1
= 20x² -(5 - 4) x - 1
= 20x² -5x +4x - 1
= 5x (4x - 1) 1 (4x -1)
= (5x + 1) (4x - 1)
both anwers are correct surely .
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