giraffegirl2 giraffegirl2

04-04-2019
Mathematics

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solve y^2+7y+12=0 by completing the square.

solve y27y120 by completing the square class=

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chikafujiwara chikafujiwara

04-04-2019

Answer:

y = -3, -4

Step-by-step explanation:

Formula is (b/2)^2

So...

(y+7/2)^2 - 1/4 = 0

Add 1/4 to each side

(y+7/2)^2 = 1/4

Square root...

y+7/2 = +-1/2

Add

y = -3, -4

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