## anonymous one year ago What is the solution of the equation? Eliminate any extraneous solutions. Square root 3x+28-8

1. SolomonZelman

$$\large\color{black}{ \displaystyle \sqrt{3x+28}=8 }$$ like this?

2. anonymous

Square root of 3x+28-8=x

3. anonymous

A. -9 and -4 B. 9 and -4 C. -9 D. -4

First step - simplify. Assuming your solving for x.

5. SolomonZelman

$$\large\color{black}{ \displaystyle \sqrt{3x+28}-8=x}$$ right?

6. anonymous

Yes

7. SolomonZelman

ok, 1) add 8 to both sides 2) raise both sides to the second power.

8. anonymous

28 and 8 right?

9. SolomonZelman

$$\large\color{black}{ \displaystyle \sqrt{3x+28}-8\color{blue}{\bf +8}=x\color{blue}{\bf +8}}$$

10. SolomonZelman

see what I did ?