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GuDViN [60]
3 years ago
14

If f(x) = 3x -2, find f(8) - f(-5)

Mathematics
1 answer:
iogann1982 [59]3 years ago
8 0

Answer:

39

Step-by-step explanation:

f(8)= 3*8 -2=24 -2= 22

f(-5)=3*(-5) -2=-15 -2= -17

f(8) - f(-5)= 22-(-17)= 39

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Without using a calculator, determine the number of real zeros of the function
kumpel [21]

The number of real zeros of the function f(x) = x3 + 4x2 + x − 6 is 3

<h3>How to determine the number of real zeros?</h3>

The equation of the function is given as:

f(x) = x^3 + 4x^2 + x - 6

Expand the function

f(x) = x^3 + 5x^2 - x^2 + 6x - 5x - 6

Reorder the terms

f(x) = x^3 + 5x^2 + 6x - x^2 - 5x - 6

Factor the expression

f(x) = x(x^2 + 5x + 6) -1(x^2 + 5x + 6)

Factor out x -1

f(x) = (x^2 + 5x + 6)(x -1)

Expand

f(x) = (x^2 + 3x + 2x + 6)(x -1)

Factorize

f(x) = [x(x + 3) + 2(x + 3)](x - 1)

Factor out x + 2

f(x) = (x + 3)(x + 2)(x- 1)

The function has been completely factored and it has 3 linear factors

Hence, the number of real zeros of the function f(x) = x3 + 4x2 + x − 6 is 3

Read more about functions at:

brainly.com/question/7784687

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3 0
2 years ago
Can somebody help me please ​
aleksklad [387]

Answer:

I think it's -2

Step-by-step explanation:

7 0
2 years ago
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Graph this function:<br> y = 3x + 4
Zinaida [17]

Answer:

(0,−4)

Step-by-step explanation:

6 0
3 years ago
What happens when you celebrate halloween in the spring
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Answer:

the day that immediately proceeds the last and final spring sabbat, ... The fact that Beltane and Samhain happen in unison twice a year lends

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3 years ago
Find the range from 4 to -2 A. 2 B. 4 C. 6 D.-2
Scilla [17]
<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ The range is the highest value minus the smallest value

Therefore, you just need to subtract the two values to find the values:

-2 - 4 = -6

The difference is just 6, so your answer is C. 6

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

7 0
3 years ago
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