4 years ago

Please Help! Find the product of (x + (3+5i))2.

1 answer:

5 0

(x + (3 + 5i))*(x + (3+5i))
= x^2 + x(3+5i) + x(3+5i) + (3 + 5i)^2
= x^2 + 2x(3+5i) + 9 + 6(5i) + 25i^2
= x^2 + 6x +10xi + 9 + 30i - 25
= x^2 + 6x + 10xi + 30i - 16

You might be interested in

I need help with this?

Minchanka [31]

Answer:

I'm not smart at this stuff

4 0

3 years ago

Find the value of x. Round the answer to the nearest tenth if needed.

horrorfan [7]

I hope this helps you

8 0

4 years ago

Solve for x. <br><br> −1/5x≥−2

Rzqust [24]

Answer:

x ≤ -10

Step-by-step explanation:

distribute -2 into your denominator (5)

7 0

4 years ago

In which different ways can 388 be written as the product of two positive integers? Choose all answers that are correct

Helen [10]

Answer: Everything except 3 * 129

Step-by-step explanation:

You can break 388 in half twice in order to find the answer.

Since 388/2 = 194, then 194 * 2 = 388

Since 388/4 = 97, then 97 * 4 = 388

Do note that 3 and 129 are both odd. Two odd factors can never make an even product. So that is out immediately.

Hope this helped a little bit, I tried to be quick with the explanation because I know how annoying those online things are. If you need anything explained more, just let me know.

4 0

1 year ago

Donnel practiced the piano 3 hours longer than Marcus. Together they practiced the piano for 11 hours. How many hours did each b

andriy [413]

Here is the equation: $x+(x+3)=11$ ⇒ $x+x+3=11$

You need to get "x" by itself so minus 3 from each side

$x+x+3-3=11-3$ ⇒ $x+x=8$ ⇒ $2x=8$

Divide 8 by 2

$8$ ÷ $2=4$

x=4

So each 4 is equivalent to 4

Lets check:

$4+(4+3)=11$ ⇒ $4+4+3=11$ ⇒ $11=11$

So that means that Marcus practiced the piano for 4 hours and Donnel practiced for 7

4 0

4 years ago