Topics
>
Precalculus>
Complex Numbers>
Add and Subtract Complex Numbers>
Add and Subtract Complex Numbers 1Add and Subtract Complex Numbers 1
Try VividMath Premium to unlock full access
Time limit: 0
Quiz summary
0 of 5 questions completed
Questions:
 1
 2
 3
 4
 5
Information
–
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
Loading...
 1
 2
 3
 4
 5
 Answered
 Review

Question 1 of 5
1. Question
Solve
`(3+4i)+(8+i)`
Correct
Great Work!
Incorrect
Imaginary equations in the form `a+bi=0` include a real part `a` and an imaginary part `bi`.To solve, group the real parts together and the imaginary parts together, and simplify.`(3+4i)+(8+i)` Remove the parentheses. `=` `color(red)(3)+4i+color(red)(8)+i` Group the real parts together. `=` `color(red)(3)+color(red)(8)+4i+i` Simplify the real parts. `=` `color(red)(11)+4i+i` Simplify the imaginary parts. `=` `11+5i` `11+5i` 
Question 2 of 5
2. Question
Solve
`(5+9i)+(59i)`
Correct
Great Work!
Incorrect
Imaginary equations in the form `a+bi=0` include a real part `a` and an imaginary part `bi`.To solve, group the real parts together and the imaginary parts together, and simplify.`(5+9i)+(59i)` Remove the parentheses. `=` `color(red)(5)+9i+color(red)(5)9i` Group the real parts together. `=` `color(red)(5)+color(red)(5)+9i9i` Simplify the real parts. `=` `color(red)(10)+9i9i` Simplify the imaginary parts. `=` `10` `10` 
Question 3 of 5
3. Question
Solve
`(1i)(62i)`
Correct
Great Work!
Incorrect
Imaginary equations in the form `a+bi=0` include a real part `a` and an imaginary part `bi`.To solve, group the real parts together and the imaginary parts together, and simplify.`(1i)(62i)` Remove the parentheses. `=` `color(red)(1)icolor(red)(6)+2i` Group the real parts together. `=` `color(red)(1)color(red)(6)i+2i` Simplify the real parts. `=` `color(red)(7)i+2i` Simplify the imaginary parts. `=` `7+i` `7+i` 
Question 4 of 5
4. Question
Solve
`(38i)(12+2i)`
Correct
Great Work!
Incorrect
Imaginary equations in the form `a+bi=0` include a real part `a` and an imaginary part `bi`.To solve, group the real parts together and the imaginary parts together, and simplify.`(38i)(12+2i)` Remove the parentheses. `=` `color(red)(3)8i+color(red)(12)2i` Group the real parts together. `=` `color(red)(3)+color(red)(12)8i2i` Simplify the real parts. `=` `color(red)(15)8i2i` Simplify the imaginary parts. `=` `1510i` `1510i` 
Question 5 of 5
5. Question
Solve
`(28+14i)(284i)`
Correct
Great Work!
Incorrect
Imaginary equations in the form `a+bi=0` include a real part `a` and an imaginary part `bi`.To solve, group the real parts together and the imaginary parts together, and simplify.`(28+14i)(284i)` Remove the parentheses. `=` `color(red)(28)+14icolor(red)(28)+4i` Group the real parts together. `=` `color(red)(28)color(red)(28)+14i+4i` Simplify the real parts. `=` `color(red)(0)+14i+4i` Simplify the imaginary parts. `=` `18i` `18i`
Quizzes
 Simplify Roots of Negative Numbers 1
 Simplify Roots of Negative Numbers 2
 Powers of the Imaginary Unit 1
 Powers of the Imaginary Unit 2
 Solve Quadratic Equations with Complex Solutions 1
 Solve Quadratic Equations with Complex Solutions 2
 Equality of Complex Numbers
 Add and Subtract Complex Numbers 1
 Add and Subtract Complex Numbers 2
 Multiply Complex Numbers 1
 Multiply Complex Numbers 2
 Divide Complex Numbers
 Complex Numbers – Product of Linear Factors 1
 Complex Numbers – Product of Linear Factors 2
 Mixed Operations with Complex Numbers