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Semenov [28]
2 years ago
12

Find the value of the expression :

Mathematics
1 answer:
kykrilka [37]2 years ago
8 0

Answer: x² + 2xy + y² = 9

x² + 2xy + y² = (x + y)²

with x = 2 + 3i and y = \frac{3+i}{i}, we have:

(x + y)^{2}=(2+3i+\frac{3+i}{i})^{2}\\\\=(\frac{2i+3i^{2}+3+i }{i})^{2}\\\\=(\frac{3i-3+3}{i})^{2}  \\\\=(\frac{3i}{i})^{2}\\\\=3^{2}=9

Step-by-step explanation:

You might be interested in
150 - x = 87 what does x equal here ?
Ainat [17]

Answer:

x=63

Step-by-step explanation:

<em>Subtract by 150 from both sides of equation.</em>

<em>150-x-150=87-150</em>

<em>Simplify.</em>

<em>87-150=-63</em>

<em>-x=-63</em>

<em>Divide by -1 from both sides of equation.</em>

<em>-x/1=-63/-1</em>

<em>Simplify, to find the answer.</em>

<em>-63/-1=63</em>

<em>x=63 is the correct answer.</em>

<em>I hope this helps you, and have a wonderful day!</em>

5 0
3 years ago
Read 2 more answers
How far will a jet travel in 2 hours and 30 minutes if its average speed is 450 miles per hour?
Nezavi [6.7K]
Distance = rate x time

D = 450 mph x 2.5 h
D = 1,125 miles
5 0
3 years ago
Read 2 more answers
How would you explain the proper use of distributive property ? ​
Maksim231197 [3]
Start with the word “distribute” meaning to pass equally. Now distributive property means to distribute equally. For example 2(4x+5) you wanna distribute the 2 amount the parentheses so that it’s”distributed evenly. 2(4x+5) is now 8x+10
3 0
2 years ago
How to solve this math problem
Vikki [24]

Answer:

D. 1 and 20

Step-by-step explanation:

To solve the equation, factor the quadratic and set the factors equal to 0.

d^2 - 21d + 20 becomes (d-20)(d-1) since -1*-20 = 20 and -1+-20 = -21.

Set each equal to 0 and solve for x.

d-20 = 0         d = 20

d - 1 = 0          d = 1

5 0
3 years ago
Question: P=IRT solving for I
Grace [21]

Answer:

I = P/(RT)

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

P = IRT

<u>Step 2: Solve for </u><em><u>I</u></em>

  1. [Division Property of Equality] Divide RT on both sides:                             P/(RT) = I
  2. Rewrite/Rearrange:                                                                                         I = P/(RT)
8 0
2 years ago
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