Pre Cal 12 Quadratics Review

Pre Cal 12 Quadratics Review

Multiple Select

Which of the following are quadratic equations?

• $2x+5=7$

• $x^2+5x-24=0$

• $2x^2-5=4$

• $x^2+3y-4=0$

Multiple Choice

Solve

 $0=x^2+6x-16$  by factoring.

• x=2, x=8

• x=-2, x=-8

• x=-2, x=8

• x=2, x=-8

Fill in the Blanks

One of the roots of this equation is 6. What is the other root?

 $x^2-x-30=0$  

Multiple Choice

Who is this?

• Cindy

• Pax

• Paul

• Yogi

Multiple Choice

8. What is the name of the vertical line that goes through the vertex of a parabola?

• The axis of evil

• Vertical line test

• The derivative

• The axis of symmetry

Multiple Choice

Use the quadratic formula to find the roots of the equation

 $x^2+3x=5$  

•  $\frac{-3\ \pm\sqrt{29}}{2}$  

•  $\frac{3\pm\sqrt{29}}{2}$  

•  $\frac{-3\pm\sqrt{-11}}{2}$  

•  $\frac{3\pm\sqrt{-11}}{2}$  

Fill in the Blanks

What is the value of the discriminant of this quadratic equation?

 $2x^2-6x+3=0$  

Fill in the Blanks

Use the discriminant to determine the number of roots of the quadratic equations

 $x^2-6x+9=0$