Sign In
Ask Question
Mathematics
Craig
30 July, 23:45
Find the product of 5+i and 4-i
+5
Answers (
1
)
Joaquin Tran
31 July, 00:49
0
21 - i
Step-by-step explanation:
(5+i) * (4-i) = 5 * (4-i) + i * (4-i)
= 5*4 - 5*i + i*4 - i*i
= 20 - 5i + 4i - i²
= 20 - 5i + 4i - (-1) { i² = - 1 }
= 20 - 5i + 4i + 1
= 21 - i
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Get an answer to your question ✅
“Find the product of 5+i and 4-i ...”
in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers
You Might be Interested in
Find the equation of a perpendicular line
Answers (1)
Charles is 23 years older than Gloria. In 14 years he will be twice her age. How old are they now?
Answers (1)
Name two different numbers that round to 9.2 when rounded to the nearest tenth?
Answers (1)
Which object would be best measured in ounces? A. strawberry B. bed C. car D. horse
Answers (1)
Explain how graphs of the same function can look different?
Answers (1)
New Questions in Mathematics
Which equation is an identity a; - 3y 3=-3y-6b; 3w 8-w=4w-2 (w-4) c; 9 - (2v 3) = - 2v-6d; 7m-5=8m 7-m?
Answers (1)
What is the measure of the angle labeled (5x + 42) °?
Answers (1)
The area of a rectangular wall of a barn is 96 square feet. its length is 4 feet longer than twice its width. find the length and width of the wall of the barn?
Answers (1)
What is the area of a trapezoid that has bases measuring 19 centimeters and 23 centimeters, and a height of 14 centimeters? Group of answer choices 294 square centimeters 105 square centimeters 322 square centimeters 266 square centimeters
Answers (1)
How many feet of outdoor carpet will we need? 4,4,2,2,2,2,5
Answers (1)
Home
»
Mathematics
» Find the product of 5+i and 4-i
Sign In
Sign Up
Forgot Password?