Question

Theo started to solve the quadratic equation (x + 2)2 – 9 = –5. He added 9 to both sides and the resulting equation was (x + 2)2 = 4. Next, he took the square root of each side. Which was the resulting equation of that step? x + 2 = ±4 x + 2 = ±2 x + 2 = ±8 x + 2 = ±16

Answer 1

Answer: option B

(B) x + 2 = ±2

Explanation:

Answer 2

x+2=±2

Explanation:

Here the original equation was:

`(x+2)^(2)-9=-5`

Then Theo added 9 to both the sides to get,

`(x+2)^(2)=4`

After this he took square root of each side,

`\sqrt{(x+2)^(2) }=√(4)`

So this simplifies to

x+2=±2