What is the complex conjugate of  4-3i?

• A.  1/(4-3i)
• B. 1/(4+3i)
• C.  -4 + 3i
• D.  4 + 3i

Tags

CCSS.HSN.CN.A.3

The complex conjugate for  $-3+2i$  is equal to

•  $3-2i$  

•  $3+2i$  

•  $-3+2i$  

•  $-3-2i$  

Tags

CCSS.HSN.CN.A.3

Find the value for the division of  $\frac{2+9i}{1+2i}$  

•  $\frac{20+5i}{5}$  

•  $\frac{20+5i}{-3}$  

•  $\frac{4+18i}{5}$  

•  $\frac{4-18i}{-5}$  

Tags

CCSS.HSN.CN.A.3

How do you write a complex number?

• a-bi

• a+bi

• ai+b

• ai-b

Tags

CCSS.HSN.CN.A.1

Simplify

• (-10+6i)/17

• (1+50i)/61

• (-23+36i)/25

• (-21+33i)/34

Tags

CCSS.HSN.CN.A.3

3/(4 - i)

• 9i

• -3 +12i

• (12 - 3i) / 4- i

• (12 + 3i) /17

Tags

CCSS.HSN.CN.A.3

3/(4 - i)

• 9i

• -3 +12i

• (12 - 3i) / 4- i

• (12 + 3i) /17

Tags

CCSS.HSN.CN.A.3

The complex conjugate can be found by...

• Changing the sign of both a and b

• Changing the sign of a

• Changing the sign of b

• Switching the a and b values

Tags

CCSS.HSN.CN.A.3

If you are adding two complex numbers you should

• add all the numbers together then divide by 2

• add only the real numbers and subtract the complex numbers

• add only the complex numbers and subtract the real numbers

• add only the real numbers together and then add only the complex numbers together then stop

Tags

CCSS.HSN.CN.A.2

When we simplify divisions of complex numbers we mutliply both the numerator and the denominator by the denominator.

• true

• false

Tags

CCSS.HSN.CN.A.3