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Mathematics
Hayley
21 July, 00:18
Completing the square
4y2+8y=11
+2
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Jada Baker
21 July, 02:33
0
4y2+8y=11
(2y+2) ^2 - 4 = 11
(2y+2) ^2 = 15
(2y+2) = + -√15
y = √15 / 2 - 1, - √15/2 - 1
y = (√15-2) / 2, (-√15-2) / 2
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