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vagabundo [1.1K]
3 years ago
6

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

Mathematics
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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1/4a + 1/3a +8 =22

1st step add like terms:

1/4a +1/3a = 3/12a +4/12a = 7/12a

7/12a +8 =22

2nd step subtract 8 from each side:

7/12a = 14

3rd step divide both sides by 7/12 to get a:

a = 14 / 7/12

a = 24

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3 years ago
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3 years ago
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3 years ago
I really don't get it can you give me the answer then explain why it is that one please ​
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Answer:

\frac{100}{9} is the answer.

Step-by-step explanation:

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