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Ann [662]
3 years ago
12

If f(x) = x3 – 2x2, which expression is equivalent to f(i)?

Mathematics
1 answer:
Ahat [919]3 years ago
8 0

Answer:

2 - i

Step-by-step explanation:

Substitute i for x. Remeber i means imaginart number.

{i}^{3}  - 2 {i}^{2}

Use the Imaginary number exponents rules

{i}^{2}  =  - 1

{i}^{3}  =  - i

i {}^{4}  = 1

Simplify the equation.

- i - ( - 2)

- i + 2

Write as a complex number in form a+bi

2 - i

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Suppose f(x) = 5x^2 + 7x...Find (-3)​
ziro4ka [17]

Answer: F(x)=24

Step-by-step explanation:

f(x)=5(-3)^2+7(-3)

f(x)= 5(9)+7(-3)

f(x)=45-21

f(x)=24

7 0
3 years ago
IN A FORM, THERE ARE 900 RABBITS, 700 SHEEP, 300 CATTLE AND 500 PIGS. WHAT PERCENTAGE OF THE TOTAL NUMBER OF ANIMALS ARE RABBITS
Free_Kalibri [48]

Answer:

Step-by-step explanation:

900+700+300+500=2.4k (2400)

there are 900 rabbits and 2400 animals total. 900% of 2400 is 37.5

hope this helps :D brainliest is always appreciated

4 0
3 years ago
I'm gonna fail pls help
baherus [9]

Answer: Option 1

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6 0
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What is the maximum point OR minimun point of this equation?
Setler79 [48]
Answer is 3 because when you solve its 3 or less
6 0
3 years ago
. Write a real world example so that it combines to make zero in each situation below.
Vladimir [108]

Here are the examples that combine to make zero:

Two month ago, the temperature was 15 degrees. This morning, the temperature dropped to 15 degrees below zero.

Michael has $0 in his account. He makes a purchase of $75. Later in the day, he deposits 75 in the account.

An elevator rises to the ninth floor and she then takes the elevator from the ninth floor to the ground floor.

The parking garage is located 4 floors below ground level. But, her office is 4 floors above ground level.

<h3>What are the real world examples?</h3>

In order for the examples to combine to make zero, there has to be a positive number and a negative number. A positive number is a number that is greater than zero. A negative number is a number that is less than zero.

In order for the positive and negative number to make zero, they have to be added together. Addition is determining the total value or summing two or more numbers. Addition is one of the four basic operations in mathematics.

Two month ago, the temperature was 15 degrees. This morning, the temperature dropped to 15 degrees below zero. -15 + 15 = 0

Michael has $0 in his account. He makes a purchase of $75. Later in the day, he deposits 75 in the account.  - 75 + 75 = 0

An elevator rises to the ninth floor and she then takes the elevator from the ninth floor to the ground floor. + 9 - 9 = 0

The parking garage is located 4 floors below ground level. But, her office is 4 floors above ground level. = -4 + 4 = 0

To learn more about addition, please check: brainly.com/question/19628082

#SPJ1

6 0
1 year ago
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