QZ - Module 4 Equations with Radicals

What is the value of x in the following equation:  $\sqrt{x\ +\ 11}\ =\ 5$  

• 25

• 14

• 36

• 116

What is the first step for the following equation:  $\sqrt{4x-1}=\ 12$  

• Divide both sides by 4.

• Add 1 to both sides.

• Square root both sides.

• Square both sides.

 $X^2\ -\ 21\ \ =\ 100$  

• 11

• 79

• 121

• 10

 $50\ -\ X^2\ =\ 1$  

• 49

• 7

• 51

• 1

• Divide both sides by 4.

• Add -1 to both sides.

• Add 1 to both sides..

• Subtract 144

Solve.

• -1/2

• 2

• 7

• no solution

Solve.

• -2/3

• -2

• 2

• no solution

• x = 3

• x = -3

• x = 2

• x = -2

• 36
• 18
• -18
• 27

• 35/3
• 35
• 3
• 7/3