Adding and Subtracting Complex Numbers

Simplify the expression:
 $\left(1\ +\ 5i\right)\ +\ \left(1\ -\ 5i\right)$  

•  $2\ +\ 10i$  

•  $2\ +\ 10i^2$  

•  $2$  

•  $-8$  

Simplify the expression:
 $\left(8\ +\ 9i\right)\ +\ \left(4\ -\ 6i\right)$  

•  $17\ +\ 3i$  

•  $12\ +\ 3i^2$  

•  $17\ -2i$  

•  $12\ +\ 3i$  

Tags

CCSS.HSN.CN.A.2

Simplify the expression:
 $\left(5\ +\ 14i\right)\ -\ \left(10\ +\ 2i\right)$  

•  $5\ -16i$  

•  $-5\ +\ 16i$  

•  $5\ -\ 12i$  

•  $-5\ +\ 12i$  

Tags

CCSS.HSN.CN.A.2

Simplify the expression:
 $\left(5\ +\ 4i\right)\ -\ \left(-1\ -\ 2i\right)$  

•  $6\ +6i$  

•  $4\ +\ 2i$  

•  $6\ -\ 6i$  

•  $4\ -\ 2i$  

Tags

CCSS.HSN.CN.A.2

Simplify: $\left(1\ +\ 3i\right)\ +\ \left(7\ -\ 2i\right)$  

• 8+i

• i+8

• 8+5i

• 5i+8

Tags

CCSS.HSN.CN.A.2

Simplify

(12 - 4i) + (-2 + 8i)

• 8 + 104i

• 10 + 4i

• 14 - 4i

• 10 - 12i

Tags

CCSS.HSN.CN.A.2

Identify the LIKE TERMS
 $-3\ +\ 9i\ -\ 2i\ +\ 6i^2$  

•  $9i\ \ \ and\ \ \ -2i$  

•  $9i,\ \ -2i\ \ \ \ and\ \ \ 6i^2$  

•  $9i\ \ \ and\ \ \ 6i^2$  

• There are no like terms

Tags

CCSS.HSN.CN.A.2

Simplify the expression:
 $\left(5\ +\ 4i\right)\ -\ \left(-1\ -\ 2i\right)$  

•  $6\ +6i$  

•  $4\ +\ 2i$  

•  $6\ -\ 6i$  

•  $4\ -\ 2i$  

Tags

CCSS.HSN.CN.A.2

• 10
• -10
• 10i
• -10i

Simplify:
(3 + 2i) + (4i + 6)

• 9 + 6i
• 7i + 8
• 9 + 6i²
• 9 - 6i