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4 years ago

8

Completing the square 4y2+8y=11

1 answer:

docker41 [41]4 years ago

3 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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