Solving multi-step problems using quadratic equations in one variable

How many real solution/s or root/s does the equation

n² = 0?

• 0

• 1

• 2

• 3

• -9

• 9

• 3

• -3

What is the BEST method to use to solve  $x^2-\frac{1}{9}=0$  ?

• Radical

• Completing the Square

• Factoring

What are the roots of the quadratic equation 2x^2 - 18 = 0 using the square root method?

• x = ±3

• x = ±6

• x = ±9

• x = ±12

Solve using square roots

• √3

• ±√3

• -3

• No real solution

• No real solutions

Solve by taking square roots:
a² + 9 = 9

• no solution
• a = 0
• a = 3 or -3
• a = 18

• Make the equation equal to zero

• Take the square root of both sides

• Subtract 75 from both sides

• Divide both sides by 3

Solve.

x² - 10 = -10

• x= 0

• No Real Number Solution

• x = ±5

• x = 2, 5