Quadratic Formula and Number Systems

 $\left(2+2i\right)\left(2+2i\right)$  

Tags

CCSS.HSN.CN.C.8

 $5i-i\cdot\left(-2i\right)$  

Tags

CCSS.HSN.CN.A.2

Which choices are real numbers?

• 2

• -7

• 3i

• 4+5i

Tags

CCSS.HSN.CN.A.1

Simplify the following and determine what type of number it is :
 $(5+2i)(6+2i)$  

• 30+22i+4i

• 26+22i

• complex number

• real number

• imaginary number

Tags

CCSS.HSN.CN.C.8

 $\sqrt{-1}$  

Tags

CCSS.HSN.CN.A.1

Simplify the following radical:  $\frac{\left(6\pm36\sqrt{10}\right)}{18}$  

•  $\frac{\left(2\pm6\sqrt{2}\right)}{3}$   

•  $\frac{\left(1+4\sqrt{3}\right)}{2}$   

•  $\frac{\left(1+3\sqrt{2}\right)}{18}$   

•  $\frac{\left(1+6\sqrt{2}\right)}{3}$   

Tags

CCSS.HSA-REI.B.4B

Use the quadratic formula to solve the following equation: $3x^2+8+4x=0$  

•  $\frac{\left(-2\pm2i\sqrt{5}\right)}{3}$   

•  $\frac{\left(2\pm3i\sqrt{5}\right)}{3}$   

•  $\frac{\left(-1\pm i\sqrt{5}\right)}{3}$   

•  $\frac{\left(-4\pm i\sqrt{40}\right)}{6}$   

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Use the quadratic formula to solve the following equation: $6x^2-13x=8$  

• x=.5

• x=.66

• x=-13.2

• x=2.66

• x=-.5

Tags

CCSS.HSA-REI.B.4B

Give me an example of three different types real numbers.

 Solve: $\left(x^2+10x+22=0\right)$ 

• a. $5\pm2\sqrt{7}$  

• b.  $-5\pm\sqrt{3}$  

• c.  $100\pm\sqrt{3}$  

• d.  $-10\pm2\sqrt{7}$  

Tags

CCSS.HSA-REI.B.4B