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vagabundo [1.1K]

3 years ago

6

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

1 answer:

kkurt [141]3 years ago

8 0

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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