Unit 3 Lesson 11

Which point represents the complex number  $-3+2i?$  

• A

• B

• C

• D

Match each expression to an equivalent expression. Write your answer in the form Letter#.

Diego squared a number and got 4. Andre squared a different number and got 4. What were the numbers that Diego and Andre squared?

Jada squared a number and got -4. Elena squared a different number and got -4. What were the numbers that Jada and Elena squared?

Find all solutions to the equation:  $a^2=1$  

Find all solutions to the equation:  $c^2=9$  

Find the exact solution(s):

Find the exact solution(s):

Find the exact solution(s):

Explain how you know that  $\sqrt{-1}$  is not a negative number.

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