Find the product. (x - 7)(y - 9)
Question
Updated 12/1/2014 10:19:52 PM
Flagged by janezeshun [12/1/2014 10:19:14 PM]
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Original conversation
User: Find the product. (x - 7)(y - 9)

User: The scientific notation 2.38 × 10-2 has what value

User: Find A B if A = {3, 6, 9, 12} and B = {2, 4, 6, 8, 10}.

Question
Updated 12/1/2014 10:19:52 PM
Flagged by janezeshun [12/1/2014 10:19:14 PM]
Rating
8
(x - 7)(y - 9)
= x*y - 7*y - 9*x + (-7)*(-9)
= xy - 7y - 9x + 63
Confirmed by jeifunk [12/2/2014 3:16:38 AM], Rated good by jeifunk

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Updated 12/1/2014 2:58:33 AM
x^3 + x^ 2 - 25x - 25
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Question
Updated 11/29/2014 9:02:19 PM
The vertex of the parabola whose equation is y = x^2 + 2x + 9 is (-1 , 8) .

x = -2/2 = -1
when x = - 1
y = (-1)^2 + 2*(-1) + 9
y = 1 - 2 + 9
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Confirmed by jeifunk [11/30/2014 2:23:13 AM]
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Updated 11/30/2014 7:43:37 PM
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Holy crap, im glad we have people on here like you to solve this lol
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