COMPLEX NUMBER PART 1

Simplify.

• -5i
• 5
• 5i
• -5

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.CN.B.4

Another way to express √-1 is?

• 1

• -1

• i

• 0

Tags

CCSS.HSN.CN.A.1

A complex number can be expressed as a + bi. What does a represent?

• the real part of the complex number

• the imaginary part of the complex number

• depends on the sign of the number

• the square root of the complex number

Tags

CCSS.HSN.CN.A.1

What does i² equal?

• -1

• √-1

• 1

• -√1

Tags

CCSS.HSN.CN.A.1

What is the imaginary part of 21-14i?

• 14

• 21

• -21

• -14

What is the real part of 13.2i+1?

• 13.2

• -1

• 1

• -13.2

 $\ Simplify\ :\sqrt{-36}\ +\ \sqrt{16}$  

•  $4\ -\ 6i$  

•  $4\ +\ 6i$  

•  $\sqrt{6}i\ -\ 4$  

•  $-\sqrt{6i}\ +\ 4i$  

Which of the following best describes a complex number?

• Consists of rational and irrational numbers.

• Consists of real part only.

• Consists of real and imaginary numbers.

• Consists of imaginary numbers.

Which of the following is a complex number?

• $4\ +\ 3x$
  

• $25\pi\ +\ 2$

• $2.5\ +\ \frac{5}{2}$

• $6\ +\ 5i$

• 5i
• -5i
• 5+i
• -5

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.CN.B.4