Question

Solve using the square root method. Round to the nearest tenth, if necessary.
x2 + 15 =0

Answer 1

would this be 3.9, -3.9?

Answer 2

Are you sure it isn't: x^2 -15=0

Answer 3

No, subtract 15 from both sides to get

x^2 = -15

Then take the square root of both sides to get

x = sqrt(-15) or x = -sqrt(-15)

Notice the negative number in the square root. This means that you won't get a real number for your answer.

Answer 4

not its x^2 + 15 = 0

Answer 5

Otherwise, you are correct!

Answer 6

Then there is no real answer.

Answer 7

alright . thanks!