9.17 Add/Sub Complex Numbers

Complex Numbers

Addition & Subtraction

Multiple Choice

Simplify the radical expression

 $\sqrt{-49}$  

•  $7$  

•  $7i$  

•  $\pm7$  

• It's already simplified.

Multiple Choice

Simplify the radical expression

 $\sqrt{-12}$  

•  $i\sqrt{12}$  

•  $-4i\sqrt{3}$  

•  $-2i\sqrt{3}$  

•  $-2\sqrt{3}$  

•  $-4\sqrt{3}$  

Multiple Choice

Simplify the expression by combining like terms.

 $2i-3+4i$  

•  $6i-3$  

•  $-3+6i$  

•  $6i^2-3$  

•  $3-6i^2$  

Multiple Choice

Simplify the expression by combining like terms.

 $6-2\left(i+4\right)$  

•  $4i+16$  

•  $4i+4$  

•  $2+2i$  

•  $-2-2i$  

Multiple Choice

Perform the indicated operation and simplify the expression.

 $\sqrt{36}+\sqrt{-12}-10$  

•  $4-i\sqrt{12}$  

•  $-4+i\sqrt{12}$  

•  $4-2i\sqrt{3}$  

•  $-4+2i\sqrt{3}$  

Multiple Choice

Perform the indicated operation and simplify the expression.

 $2i\left(2i-4\right)$  

•  $4i^2-8i$  

•  $-4-8i$  

•  $-4i$  

•  $4i^2-8$  

DON'T FORGET!

Whenever you have an i squared in an expression, it is equivalent to negative one!

Open Ended

Perform the indicated operation and simplify the expression.

 $-2+3\left(4i-5\right)+-3i^2$  

Open Ended

Create an expression with AT LEAST 4 TERMS that is equivalent to

 $-3i-12$