REAL AND COMPLEX NUMBERS 4

What complex number does this graph represent?

• $-2+3i$

• $2+3i$

• $3+2i$

• $3-2i$

Given this graph, how did they find $7+2i$ ?

•  $\left(3+5i\right)-\left(4-3i\right)$  

•  $\left(3+5i\right)+\left(4-3i\right)$  

•  $\left(4-3i\right)-\left(3+5i\right)$  

•  $\left(4-3i\right)+\left(3+5i\right)$  

What does $-5-2i$  represent in this photo?

•  $\left(3+4i\right)-\left(-2+2i\right)$  

•  $\left(-2+2i\right)-\left(3+4i\right)$  

•  $\left(3+4i\right)+\left(-2+2i\right)$  

•  $\left(-3+4i\right)-\left(-2+2i\right)$  

In -3 + 6i, what is the real part?

• 3

• 6i

• -3

• -3 + 6i

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.

Tags

CCSS.HSN.CN.A.1

Given : 25i, what is the real part?

• 25

• I

• 0

• 25i

Tags

CCSS.HSN.CN.A.1

Which of the following is a complex number?

Hint: Remember   $i^2\ =\ -1$  

•  $-3\ +\ \pi$ 

•  $6\ +\ \sqrt{-5}$  

•  $-\ 12\ +\ i^2$  

•  $17\ +\ \sqrt{5}$  

A complex number has a real part 4 and an imaginary part coefficient of - 3. Which binomial is equivalent to this complex number?

• $-3\ +\ 4i$

• $-3\ +\ \sqrt{4}$

• $4\ -\ 3i$

• $4\ -\ \sqrt{3}$

Which of the following is a complex number?

• $4\ +\ 3x$
  

• $25\pi\ +\ 2$

• $2.5\ +\ \frac{5}{2}$

• $6\ +\ 5i$

 $What\ is\ the\ value\ of\ \sqrt{-1}?$ 

• 1

• -1

• -i

• i