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OpenStudy (anonymous):
Factor completely 3x3– 21x2– 27x 3x(x2– 7x – 9) 3x(x + 1)(x – 9) 3(x2– 7x – 9) 3(x3– 21x2– 27x)
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OpenStudy (anonymous):
its A coz if u miltiply 3x to x2-x-9=3x3– 21x2– 27x
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