Question

sqrt(x+2)=-2. Solve for x. It looks simple but I just couldn't get it.

Answer 1

sqrt(x+2)=-2

(sqrt(x+2))^(2)=(-2)^(2)

x+2=((4))

x+2=(4)

x+2=4

x=2

Answer 2

There is no solution because the equation says that the POSITIVE root is equal to a NEGATIVE number.

Answer 3

Thats the answer I got a few minutes ago and its not right.

Answer 4

no real solution

Answer 5

\[\sqrt{f(x)} \ge 0\]

Answer 6

The answer 2 is what I got.....thanks guys that really helps.

Answer 7

never negative

Answer 8

the answer is certainly not two

\[\sqrt{a}\geq0\] so it cannot be -2

Answer 9

look at the big picture.... think of a something you can take the square root of to get a negative number... if you can't then there is no real solution. there are complex solutions though...

Answer 10

Just remember that when you solve a radical equation you must always check the answer because the solution process sometimes introduces an extraneous root.

Answer 11

if you see
\[\sqrt{\text{something}}=\text{something negative}\] stop right there

Answer 12

awesome thanks guys!!! and gals!!