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3 years ago

6

X^2 + 4x + 4 = 10please help!! I missed class! show steps!

1 answer:

lina2011 [118]3 years ago

3 0

Answer:

x = √(10) - 2, -√(10) - 2

Step-by-step explanation:

x² + 4x + 4 = 10

factor:

(x + 2)² = 10

take square root of both sides:

x + 2 = ±√(10)

split into 2 equations:

x + 2 = √(10) x + 2 = -√(10)

solve both equations and collect solutions:

x = √(10) - 2, -√(10) - 2

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