Add, Subtract, and Multiply Complex Numbers

Complex Numbers

I can perform operations with complex numbers.

​Complex Numbers

​Adding and Subtracting Complex Numbers

​Adding and Subtracting Complex Numbers

Multiple Choice

$$\left(6+8i\right)-\left(6+3i\right)$$  

• $$-12+5i$$  

• $$8$$  

• $$-4+8i$$  

• $$5i$$  

Multiple Choice

$$\left(6+3i\right)+\left(-5+2i\right)$$  

• $$1+i$$  

• $$1+5i$$  

• $$-11+i$$  

• $$1+3i$$  

Multiple Choice

$$\left(1-8i\right)-\left(5i\right)+5$$  

• $$6-3i$$  

• $$6+3i$$  

• $$-6-3i$$  

• $$6-13i$$  

Multiple Choice

$$\left(-1-2i\right)+\left(7+5i\right)$$  

• $$6+7i$$  

• $$5+3i$$  

• $$3+5i$$  

• $$6+3i$$  

​Multiplying Complex Numbers

​Multiplying Complex Numbers

Multiple Choice

$$\left(-1-2i\right)\left(-6-6i\right)$$  

• $$-7+16i$$  

• $$24+24i$$  

• $$12+12i$$  

• $$-6+18i$$  

Multiple Choice

$$\left(8+5i\right)^2$$  

• $$39+80i$$  

• $$225$$  

• $$39-80i$$  

• $$56+90i$$  

Multiple Choice

$$\left(4+6i\right)\left(-6+4i\right)$$  

• $$-54-16i$$  

• $$-52i$$  

• $$52i$$  

• $$-48-20i$$  

Multiple Choice

$$\left(8i\right)\left(-2i\right)\left(-4+5i\right)$$  

• $$-64+80i$$  

• $$60+48i$$  

• $$64-80i$$  

• $$90+72i$$  

​Delta Math >> Add, Subtract, Multiply Complex Numbers