Quadratic Formula Review

Solve 2x² + 7x - 15 = 0

• -3/2 or 5

• No Solution

• -5 or 3/2

• 0.7 or 5

In the equation
 $x^2+5x+7\ =0$   match each leading coefficient with its correct letter 

•  $a=0,b=5,c=7$  

•  $a=1,b=5,c=7$  

•  $a=7,b=5,c=1$  

•  $a=x^2,\ b\ =\ 5x,\ c\ =\ 7$  

What is the missing number in the formula for the quadratic equation,   $2x^2+2x-12=0$  ?
 $x\ =\frac{-2\ \pm\sqrt{\left(\ ?\right)^2-4\left(2\right)\left(-12\right)}}{2\left(2\right)}$  

• 2

• -12

• 4

• -2

Simplify √-48

• 4i
• -4√3
• 4i√3
• 12i

 $x^2-6x+4=0$  

•  $3\pm\sqrt{5}$  

•  $\frac{6\pm\sqrt{20}}{2}$  

•  $3\pm\sqrt{20}$  

•  $3\pm i\sqrt{13}$  

 $t^2+4t=2$  

•  $\frac{-4\pm\sqrt{24}}{2}$  

•  $4\pm2\sqrt{6}$  

•  $-2\pm\sqrt{6}$  

•  $\frac{4\pm3\sqrt{8}}{2}$  

 $2x^2+2x+5=0$  

•  $\frac{-1\pm3i}{2}$  

•  $\frac{-1\pm i\sqrt{11}}{2}$  

•  $\frac{2\pm\sqrt{40}}{4}$  

•  $\frac{-1\pm i\sqrt{6}}{2}$  

Use the quadratic formula to solve 2x² + 2x - 12?

• -2, 3
• 2, 3
• 2, -3
• -2, -3

 $b^2-4b+4=0$  

• x = -2

• x = 2

• no real solution

• x = -2 and 2

• x = 7 and -2

• x = 7 and 2

• x = -7 and -2

• x = -7 and 2