What are the zeros of the function f(x) = x4 − 4x2 − 5?

Mathematics

2 answers:

levacccp [35]2 years ago

7 0

Answer:

See below ~

Step-by-step explanation:

The function is :

f(x) = x⁴ - 4x² - 5

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Plotting on a graph :

⇒ Once plotted on graph, check where the line of the function intersects the x-axis

⇒ Those will be the zeros of the function

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Solution :

⇒ x = -2.236

⇒ x = 2.236

Gekata [30.6K]2 years ago

4 0

Answer:

A graph shows zeros to be ±3. Factoring those out leaves the quadratic

(x-2)² +1

which has complex roots 2±i.

The function has roots -3, 3, 2-i, 2+i.

Step-by-step explanation:

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Ms. Carr's Class Is Selling Magazines To Raise Money For A Field Trip. The Students In The Class Device They Wanted To Make 5.50

FinnZ [79.3K]

Here you are giving only the amount they want to raise (namely profit times number of magazines sold), and here you are also giving Money they want to raise... So clarifying, the money they want to raise, should include the money they will spend on buying the magazines (there is no statement saying they found them, or were given the magazines, so a cost should be involved)

Now if they are only making the count of "Field trip costs X amount of money, and given we have to make a profit of $5.5, How many must we sell?" then the equation should be n=X/5.5

Should the story be, how much money must they raise to have a profit of 5.5 on each magazine and still have enough for the field trip, then you have a different equation which varies only in adding the cost of each magazine, either case, M should be defined not as money they need to raise (cause here they will be short on their goal) but Money they must earn. And again, you should rewrite your equation to be:

M=Amount they must raise
C=Cost per magazine
n=Number of magazines
p=profit $5.5 per magazine

C+p=M/n

And rewriting the previous they should make:

n(C+p)=M -----> n(C+5.5)=M m/n = 5.50 
m/n x n = 5.50 x n //// multiply each side by n 

m = 5.5n

6 0

3 years ago

Read 2 more answers

How to solve it&&&&&&&&&&&

Dimas [21]

Answer:

y = 4 and x = 12

Step-by-step explanation:

Step by step explanation in the pic. Atleast the way I did it.

8 0

3 years ago

Pleaaasseee help!!! BRAINLIEST FOR CORRECT ANSWER!! What is the transformation rule for a translation 3 units right?

garri49 [273]

Answer:

Rule: replace x by x - a where a is the number of units that you want to move right. a must be greater than 0. x - - a would move left.

Step-by-step explanation:

You want f(x) to move 3 units to the right.

That would mean that x would be replaced by x - 3. Just to be sure let's try it.

Suppose you have f(x) = x^2 + 6x + 5 It is graphed as the red line
Now suppose you want to move 3 units right.
It would replaced like f(x - 3) = (x - 3)^2 + 6(x - 3) + 5 which is the blue line
Notice nothing else is changed. The blue line looks exactly like the red line except that it is shifted 3 units to the right.