Chapter 4: Quadratics Review

Solve  $2x^2+17x+21=0$  

• -7 and -3/2

• -7 and -2/3

• -7 and 3

• -4 and 3

Tags

CCSS.HSA-REI.B.4B

 $16x^2=9$  Solve

•  $\frac{3}{4}$  

•  $\pm\frac{3}{4}$  

•  $\frac{4}{3}$  

•  $\pm\frac{4}{3}$  

Tags

CCSS.8.EE.A.2

 $2x^2+8x=0$  Solve

• -4

• 1/4 

• 0 and -4

• 1/4 and 0

Tags

CCSS.HSA-REI.B.4B

Write a quadratic equation in standard form with roots 3 and -2.

• $x^2-x-6=0$

• $x^2+5x-6=0$

• $x^2+x+6=0$

• $x^2-5x-6=0$

 $\left(2i\right)^3\left(3i\right)\left(-5\right)$  

• -120

• -30

• 30i

• 120i

 $\left(5+9i\right)-\left(1-7i\right)$  

• 4 + 2i

• 6 + 2i

• 4 + 16i

• 6 - 2i

 $\sqrt{-500}$  Simplify:

•  $5\sqrt{100}$  

•  $5i\sqrt{10}$  

•  $10i\sqrt{5}$  

•  $-10\sqrt{5}$  

Simplify: $\frac{4i}{1+3i}$  

•  $\frac{4i+12}{11}$  

•  $\frac{i}{10}$  

•  $\frac{4i-12}{11}$  

•  $\frac{-12i+3}{11}$  

Simplify:  $\frac{5}{3i}$  

•  $\frac{5i}{3}$  

•  $\frac{-5}{-3i}$  

•  $\frac{15}{9}$  

•  $-\frac{5i}{3}$  

Simplify: $i^{82}$  

• i

• -1

• -i

• 1