Find a negative real number such that the square of the sum of the number and 5 is equal to 48

Question

zepdrix · Answer

Let's call our unknown number $\large x$.

`the square of the sum of the number and 5`
$\large (x+5)^2$

Understand how I interpreted that sentence?
We are taking their sum, and squaring it.

`is equal to 48`
$\large (x+5)^2=48$


Solve for $\large x$! :)

zepdrix · Answer

Since it's a quadratic (2nd degree polynominial), you'll end up with 2 solutions.
The instructions are telling us that we want the negative solution.

anonymous · Answer

thnk you! :D