6-7 Solving Radical Equations & Inequalities

3. Solve the following equation:

 $6\sqrt{x+10}=42$  
Is this root Extraneous?

•  $-39$  ; Not Extraneous

•  $39$   ; Extraneous

•  $39$   ; Not Extraneous

• 

Tags

CCSS.HSA.REI.A.2

6. Solve the following equation:

 $\sqrt{x-12}=2-\sqrt{x}$  
Is this root Extraneous?

•  $16$ ; Extraneous

•  $-16$  ; Extraneous

•  $16$  ; Not Extraneous

• 

Tags

CCSS.HSA.REI.A.2

9. Solve the following equation: $3\left(x+6\right)^{\frac{1}{2}}=9$  

Is this root Extraneous?

•  $-3$  ; Extraneous 

• 
  

   $3$  ; Not Extraneous
  

•  $3$  ; Extraneous

• 

Tags

CCSS.HSA.REI.A.2

12. Solve the following equation:  $^3\sqrt{x+6}=2\ \ ^3\sqrt{x-1}$  

Is the root Extraneous?

•  $\frac{12}{7}$  ; Extraneous

•  $2$  ; Not Extraneous

•  $-2$  ; Extraneous

• 

Tags

CCSS.HSA.REI.A.2

15. Solve the following inequality:  $\sqrt{2x+2}+1\ge5$  

•  $x\ge7$  

•  $x\le7$  

•  $x>7$  

•