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20. Find the value or values of y in the quadratic equation y2 + 4y + 4 = 7. A. y = 2, y = 7 C. y = –2 , y = 2 B. y = 2 + 2 , y = 2 – 2 D. y = –2 + , y = –2 –
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Asked 4/15/2014 8:35:27 PM
Updated 4/22/2014 9:37:14 PM
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Flagged by yeswey [4/22/2014 9:35:59 PM]
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User: 20. Find the value or values of y in the quadratic equation y2 + 4y + 4 = 7. A. y = 2, y = 7 C. y = –2 , y = 2 B. y = 2 + 2 , y = 2 – 2 D. y = –2 + , y = –2 –

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babkat13|Points 9|

Question
Asked 4/15/2014 8:35:27 PM
Updated 4/22/2014 9:37:14 PM
1 Answer/Comment
This conversation has been flagged as incorrect.
Flagged by yeswey [4/22/2014 9:35:59 PM]
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y^2 + 4y + 4 = 7
(y + 2)^2 = 7
y + 2 = ± sqrt 7
y = - 2 ± sqrt 7
Added 4/22/2014 9:37:14 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [4/22/2014 9:41:39 PM]
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Questions asked by the same visitor
12. Simplify (15x2 – 24x + 9) / (3x – 3) = A. 5x + 3 C. 5x + 13 with a –30 remainder B. 5x – 3 D. 5x – 13 with a –30 remainder
Question
Updated 4/12/2014 8:45:41 AM
1 Answer/Comment
(15x2 – 24x + 9) / (3x – 3)
= 3(5x^2 - 8x + 3)/3(x - 1)
= (5x^2 - 8x + 3)/(x - 1)
= (x - 1)(5x - 3)/(x - 1)
= 5x - 3
Added 4/12/2014 8:45:41 AM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [4/12/2014 8:49:35 AM]
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