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AnnyKZ [126]
3 years ago
7

If f(x) = x^3 – 2x^2, which expression is equivalent to f(i)?

Mathematics
1 answer:
MrRissso [65]3 years ago
5 0

Answer:

2 - i

Step-by-step explanation:

If  i  in the expression  f(i)  is an imaginary number, then

f(i) =  i^3  -  2 i^2  =  -i  - 2*(-1)  =  2 - i

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(2³)² solve this problem
max2010maxim [7]

Answer:

(2^3)^2 = 64

Step-by-step explanation:

Option 1:

Using the following rule:

(a^n)^m = a^{nm}

Put in our expression,

a = 2

n = 3

m = 2

(a^n)^m = a^{nm}

(2^3)^2 = 2^{3*2}=2^6=64

Option 2:

Using the following rule:

a^n * a^m = a^{n+m}

Since our expression is the same as multiplying 2³ with itself, we can write it as a multiplication.

(2^3)^2 = 2^3 * 2^3

If we compare this with a^n * a^m, we can see that

a = 2

n = 3

m = 3 (in this case, n and m are equal)

a^n*a^m = a^{n+m}

2^3*2^3 = 2^{3+3} = 2^6 = 64

Answer: (2^3)^2 = 64

7 0
3 years ago
If 1/3 is 0.333 then 3/3 is 0.999 that means 1 doesnt actually equal 1​
sergejj [24]

Answer:

Correct

Step-by-step explanation:

When you type 1/3 into a calculator it should give you something along the lines of .333333334. If you continue to round, eventually you will get 1.

7 0
3 years ago
Read 2 more answers
What is the volume of a hemisphere with a radius of 2.3 m, rounded to the nearest tenth of a cubic meter?
ANTONII [103]

Answer:25.5m^3

Step-by-step explanation:

radius(r)=2.3m

π=3.14

volume of hemisphere=2/3 x π x r^3

Volume=2/3 x 3.14x(2.3)^3

Volume=2/3 x 3.14 x 2.3 x 2.3 x 2.3

volume=(2x3.14x2.3x2.3x2.3) ➗ 3

Volume=76.40876 ➗ 3

Volume=25.5

3 0
3 years ago
I just don't understand what to do.
Nostrana [21]
Subtract 510 from 375 because you need to find how many more points that he needs to get
8 0
3 years ago
Read 2 more answers
1/4ab+1/3ab=12+1/2ab geometry help
Shkiper50 [21]

Answer:

ab=1/12

Step-by-step explanation:

1/(4ab)+1/(3ab)-1/(2ab)=12

1/(ab)*[1/4+1/3-1/2]=1/12

1/(12ab)=1/12

ab=1

6 0
3 years ago
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