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Use the discriminant to find the number of real roots in Y = x^2 – 6x + 9
asked
Oct 10, 2017
Mathematics
high-school
1
answer
4
votes
174k
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What unit of time on earth is based on the revolution of the moon around the earth
asked
Jul 25, 2017
Chemistry
high-school
1
answer
4
votes
211k
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