3 years ago

Simplify and write the complex number in standard form 4i(7+6i)+2i(5-2i)

Mathematics

2 answers:

Stella [2.4K]3 years ago

6 0

Answer:

-20+38i

Step-by-step explanation:

Hope this will help you

Bezzdna [24]3 years ago

3 0

Answer:

20i² + 38i

Step-by-step explanation:

4i(7+6i)+2i(5-2i)

28i + 24i² + 10i - 4i²

24i² - 4i² + 28i + 10i

20i² + 38i

You might be interested in

Determine the constant that must be added to the given expression to complete the square and express the resulting trinomial as

erma4kov [3.2K]

Constant:9
Expression: (x-3)^2

8 0

3 years ago

Use an angle sum identity to derive each double-angle identity.

Simora [160]

$\ [cos(2\theta)]'=(2cos^2\theta-1)'=2(cos^2\theta)'-(1)'\\\\=2\cdot2cos\theta\cdot(-sin\theta)-0=-2\cdot2sin\theta cos\theta=\boxed{-2sin2\theta}\\\\Used:\\\ [f(x)-g(x)]'=f'(x)-g'(x)\\\{f[g(x)]\}'=f'[g(x)]\cdot g'(x)\\(cosx)'=-sinx\\sin2x=2sinxcosx$

4 0

3 years ago

What are the domain and range of the exponential function below? <img src="https://tex.z-dn.net/?f=F%28x%29%20%3D%205%5

faust18 [17]

Answer:

Step-by-step explanation:

The domain is the set of x values for which the function is defined.

The range is the set of y values for which the function is defined.

Attached is the graph of the exponential function.

It is the basic graph of exponential function of y = 5^x which is shifted 6 units above (because of +6 at the end).

Looking at the graph, the domain is the set of all x values.

The range is anything above 6.

Correct answer is B.

3 0

3 years ago

[(23 × 2.5) , 1/2] + 120

nataly862011 [7]

Answer:

148.75

Step-by-step explanation:

Pls mark me as brainliestttt

3 0

3 years ago

1. The 4th, 5th, and 6th terms of an arithmetic sequence are 19, 23, and 27 respectively. What is the first

babymother [125]

Answer: 7

Step-by-step explanation: The only pattern in this sequence that I can see is addition by 4. Therefore, the 3rd term is 15, the 2nd is 11, the 1st is 7.

Please consider Brainliest.

8 0

2 years ago