## anonymous 3 years ago -4 sqrt x+9=20 need help please!

• This Question is Open
1. anonymous

is it $$-4\sqrt{x+9}=20$$ or is it $-4\sqrt{x}+9=20$?

2. anonymous

the first one

3. anonymous

then there is no answer, because the left hand side $$-4\sqrt{x+9}$$ is negative, but the right hand side $$20$$ is positive

4. anonymous

$$\sqrt{a}$$ is always greater than or equal to zero, so when you multiply by $$-4$$ the term will be less than or equal to zero, and it cannot equal a positive number

5. anonymous

6. anonymous

No, there is no solution like satellite73 says....

7. anonymous

yes, there is no solution to this

8. anonymous

thank you!