How do you solve #sqrtx + 4 = -3#?

1 Answer
Jul 23, 2015

Answer:

There's no real answer to this one.

Explanation:

If you subtract #4# on both sides you get:

#sqrtx=-7#

Now, by definition, a square root cannot have a negative argument, nor a negative outcome, so there is no answer in the real numbers.
See domain and range of the graph below:
graph{sqrtx [-7.05, 24.98, -6.8, 9.22]}