Solving Quadratics

Find the solutions of this quadratic.

• $b=\frac{4}{5},\ b=3$
  

• $b=4,\ b=-3$

• $b=\frac{1}{5},\ b=3$

• $b=\frac{4}{5},\ b=-3$

Find the solution set for:  $b^2-2b=8$  

• 
  

   $\left\{-2,\ 4\right\}$  
  

•  $\left\{-8\right\}$  

•  $\left\{\pm8\right\}$  

• No real solutions

Use the square root property to solve the Quadratic Equation. $2\left(x-4\right)^2=200$  

•  $x=\pm10$  

•  $x=-14,\ x=6$  

•  $x=-6,\ x=14$  

•  $x=100$  

Solve the equation using the zero product property. $\left(x-9\right)\left(x+3\right)=0$  

•  $x=3,\ x=9$  

•  $x=3,\ x=-9$  

•  $x=-3,\ x=9$  

•  $x=-3,\ x=-9$  

Use the best method to solve the Quadratic Equation:

 $x^2+5x-36=0$  

•  $x=-9,\ x=-4$  

•  $x=-9,\ x=4$  

•  $x=9,\ x=4$  

•  $x=9,\ x=-4$  

Use the best method to solve the Quadratic Equation:

 $x^2=-4x+9$  

•  $x=-2\pm\sqrt{13}$ 

•  $x=-2\pm2\sqrt{7}$  

•  $x=-2\pm\sqrt{7}$  

•  $x=-2\pm2\sqrt{13}$  

Miked solved the equation x² + 8x = 14 by completing the square. Which of the following equations is part of the correct solution.

• (x + 4)² = 14
• (x + 4)² = 18
• (x + 4)² = 30
• (x+ 4)² = 30

Tags

CCSS.HSA-REI.B.4B

Solve the following quadratic equation by completing the square:

 $x^2+4x+1=0$  

•  $x=-2\pm\sqrt{3}$  

•  $x=-3\pm\sqrt{2}$  

•  $x=2\pm\sqrt{3}$  

•  $x=2\pm\sqrt{2}$  

Find the solution set for the following quadratic equation:

 $x^2+4x-1=0$  

•  $\left\{-2\pm\sqrt{5}\right\}$  

•  $\left\{-5\pm\sqrt{2}\right\}$  

•  $\left\{2\pm\sqrt{5}\right\}$  

•  $\left\{-5\pm\sqrt{5}\right\}$  

Which equation shows  $x^2+8x+9=0$  after the method of completing the square has been applied?

•  $\left(x+2\right)^2=-5$  

•  $\left(x+4\right)^2=7$  

•  $\left(x+8\right)^2=55$  

•  $x^2=-\left(8x+9\right)$  

Tags

CCSS.HSA-REI.B.4B