Here's the question you clicked on:

## bridgetolivares 4 years ago i dont think this is correct but solve for x, i will draw out my problem and work.

• This Question is Closed
1. bridgetolivares

|dw:1335728748154:dw|

2. nbouscal

What is the original problem? $$-4\sqrt{x+9}=20$$?

3. bridgetolivares

yes

4. nbouscal

Okay. You can't add 4, because it's $$-4\sqrt{x+9}$$, not $$-4+\sqrt{x+9}$$. You can divide, though, which will give you $$\sqrt{x+9}=-5$$, then square both sides to get $$x+9=25$$, so $$x=16$$.

5. bridgetolivares

ahh i see. thank you.

#### Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy