1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
jeyben [28]
3 years ago
13

(11+i)^2 please help!

Mathematics
1 answer:
masya89 [10]3 years ago
8 0

Answer:

121 + 22i - 1

Step-by-step explanation:

Expand:

(11 + i)² = (11 + i)(11 + i)

Note that:

i² = -1

Use FOIL method. Multiply first terms, outside terms, inside terms, then the last two terms:

(11)(11) = 121

(11)(i) = 11i

(i)(11) = 11i

(i)(i) = -1

Combine like terms:

121 + 11i + 11i - 1

121 + (11i + 11i) - 1

121 + 22i - 1

121 + 22i - 1 is your answer.

~

You might be interested in
In a right triangle, CosA=0.352 and SinA=0.936 What is the approximate value of tanA?
mr_godi [17]
\tan A=\frac{\sin A}{\cos A}

Proof: \sin\div\cos=\frac{o}h\div\frac{a}h=\frac{o}h\times\frac{h}a=\frac{oh}{ha}=\frac{o}a=\tan

\cos A=0.352,\ \sin A=0.936

\tan A=\frac{0.936}{0.352}

\boxed{\tan A=2.65\overline{90}} <em>(round as needed)</em>
6 0
3 years ago
Read 2 more answers
-14=-20y-7x<br> 10y+4=2x <br><br> Solve by Elimination please!
iogann1982 [59]

Answer:

x = 2    y = 0

Step-by-step explanation:

8 0
2 years ago
The reduce feature on a copy machine is set at 84%. The picture being copied is 4.5 inches wide. What will be the width of yhe r
snow_tiger [21]

Answer:

The answer is 3.825 inches, the reduced picture will be 84% of the size of the original

8 0
3 years ago
Read 2 more answers
Find the output, h, when the input, x, is -18 <br><br>h=17+x/6
Elis [28]

Answer:

h=14

Step-by-step explanation:

h=17+x/6

x=-18

h=17+-18/6

h=17+-3

h=17-3

h=14

If this has helped you please mark as brainliest

5 0
3 years ago
901334 x 2368 = ? I WILL GIVE BRAINLIEST TO A CORRECT ANSWER PLEASE HURRY
aliya0001 [1]

Answer:

901334 x 2368 = 2134358912 is the correct answer

Step-by-step explanation:

I hope this helps you :)

5 0
2 years ago
Read 2 more answers
Other questions:
  • Write the equation of a line PARALLEL to y = 2x + 3 that passes through the point (3, 1).
    15·1 answer
  • Mr. Gengel wants to make a shelf with boards that are 1 1/3 feet long. If he has an 18 foot board, how many pieces can he cut fr
    11·1 answer
  • Please fill out the function table.<br>Questions are in the photo.
    6·2 answers
  • a box of 60 tissues has a length of 11 cm , a width of 10.5 cm and a height of 13.5 cm. find the volume of the box of tissues
    7·1 answer
  • Hi, please help if your are able please
    11·2 answers
  • What wire is bigger bigger .33 or .275
    12·2 answers
  • Write the equation of the line through the given point with the given slope. If possible use slope-intercept form. Simplify comp
    7·1 answer
  • Use substitution to solve the system of equations​
    15·2 answers
  • WILL GIVE BRAINIEST !!!
    6·2 answers
  • Answer with explanation please
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!