## kaleighdunn Group Title -4 sqrt x+9=20 need help please! one year ago one year ago

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1. satellite73

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

2. kaleighdunn

the first one

3. satellite73

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. satellite73

$$\sqrt{a}$$ 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. kaleighdunn

6. FTell92

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

7. satellite73

yes, there is no solution to this

8. kaleighdunn

thank you!