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3 years ago

What is the value of the product (3 - 2i(3 + 2i?

Mathematics

2 answers:

ZanzabumX [31]3 years ago

7 0

Answer:

i is always positive

Step-by-step explanation:

if be multiply 3 by 3 and get 9, then you multiply -2i by 2i and get -4i squared

9-4i^2 is now easy to solve unless we do now know the value of i, but since i is squared, i is always positive

stira [4]3 years ago

5 0

Answer:

Step-by-step explanation:

Assuming this is (3-2i)(3+2i)

Use the FOIL method

First: 3(3) = 9

Outter: 3(2i) = 6i

Inner: -2i(3) = -6i

Last: -2i(2i) = -4i²

Add all of them together:

9 + 6i - 6i - 4i²

= 9 - 4i² = 9 - 4(-1) = 9 + 4 = 13

*NOTE that i² = -1

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−16=−4(2x−8) please help

ruslelena [56]

Answer:

x = 6

Step-by-step explanation:

−16=−4(2x−8)

Let's rearrange so solving would be easier.

-4(2x-8) = -16

Let's open the brackets. Please take note of the signs (+) (-).

(-4 * 2x) + (-4 * -8) = -16

-8x + 32 = -16

Subtract 32 from both sides. Please take note of the signs (+) (-).

-8x + 32 (-32) = -16 (-32)

-8x + 0 = = -48

-8x = -48

Divide both sides by -8.

-8x/-8 = -48/-8

x = 6

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Read 2 more answers

Ms. Walker gave her students a biology test last week. Here are the test scores for each of the fifteen students. Test scores 81

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The completion of the grouped frequency distribution for the test scores of the fifteen students that took the biology test last week is as follows:

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<h3>What is a frequency distribution?</h3>

A frequency distribution is a pictorial or graphical representation that shows the number of observations of each categorical value (a group of values) that occurs.

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A rectangle was rearranged to form a parallelogram. How is the height of the parallelogram similar to and different from the wid

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3 years ago

Steve has three times as many quarters as half-dollars. The coins total $13.75. How many total coins does he have, how would you

statuscvo [17]

Hello,
Let assume x the number of half-dollars3x is the number of quarters.
The coins total $13.75.
$0.50 *x+ 0.25 *3x=13.75\\

\Rightarrow\ \dfrac{x}{2}+ \dfrac{3x}{4}=13.75\\

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3 years ago

What is the value of the product (3 - 2i(3 + 2i?​

What is the value of the product (3 - 2i(3 + 2i?