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3 years ago

Following solutions to this equation?

Mathematics

1 answer:

Alekssandra [29.7K]3 years ago

3 0

Answer:

Step-by-step explanation:

hello :

x²+6x+9 = 20

(x+3)²-20 = 0

(x+3)²-√20 = 0

(x+3-√20)(x+3+√20)=0

x+3-√20=0 or x+3+√20=0

x = -3+√20 or x = -3-√20 answer B

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