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Stella [2.4K]
3 years ago
11

Is the product of -2 x^3+x-5 and x^3-3 x-4 equal to the product of x^3 - 3x - 4 and -2x^3 + x - 5 ? Explain your answer.

Mathematics
1 answer:
fenix001 [56]3 years ago
8 0

Answer:

You are correct, it is no!

Step-by-step explanation:

If u do the math correct you'll learn that they are not equal.... just trust me lol

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WILL GIVE BRAINIEST Which of the following is NOT a perfect square? Question 3 options: 36 25 49 81 35 144 100
jok3333 [9.3K]

Answer:

35

Step-by-step explanation:

The way I know is because I memorized every square up to 33.

BUT that's probably not helpful to you.

Remember that every perfect square has an odd number of factors. I'm not going to list them all out, but the factors of 35 are 1, 5, 7, and 35, giving it an even number of factors. All the rest have an odd number of factors because of the property of a perfect square: a number times itself gives a perfect square, but that number only counts as 1 factor.

4 0
3 years ago
Find the area of the rectangle <br>Pls hurry and answer!!​
lana [24]

Answer:

5.4

Step-by-step explanation:

3/5 x 9 is 5.4. To find the area of a rectangle you need to multiply the length times the width.

4 0
2 years ago
Pls help with 29..tank you
trapecia [35]

Answer:

See below

Step-by-step explanation:

Let the  2 roots be  A and A^2.

Then A^3 = c/a and A + A^2 = -b/a.

Using the identity a^3 b^3 = (a + b)^3 - 3ab^2 - 3a^2b:-

A^3 + (A^2)^3 =  ( A + A^2)^3 - 3 A.A^4 - 3 A^2. A^2

= (A + A^2)^3 - 3A*3( A + A^2)

Substituting:-

c/a + c^2/a^2 = (-b/a)^3 - 3 (c/a)(-b/a)

Multiply through by a^3:-

a^2c + ac^2 = -b^3 + 3abc

Factoring:-

ac(a + c) = 3abc - b^3

This is not the formula required in the question but let's see if the formula in the question reduces to this. If it does we have completed the proof.

a(c - b)^3 = a(c^3 - 3c^2b + 3cb^2 - b^3) = ac^3 - 3ac^2b + 3acb^2 - ab^3

c(a - b)^3 = c(a^3 - 3a^2b + 3ab^2 - b^3) = ca^3 - 3a^2bc + 3acb^2 - cb^3.

These are equal so we have

ca^3 - 3a^2bc + 3acb^2 - cb^3 = ac^3 - 3abc^2 + 3acb^2 - ab^3

The 3acb^2 cancel out so we have:-

a^3c - ac^3 =  3a^2bc - 3abc^2 + b^3c - ab^3

ac(a^2 - c^2) = 3abc( a - c) + b^3(c - a)

ac(a + c)(a -c) = 3abc(a - c) - b^3 (a - c)

Divide through by (a - c):-

ac(a + c) = 3abc - b^3 , which is the result we got earlier.

This completes the proof.

 

3 0
3 years ago
Read 2 more answers
12. In the diagram below…
aniked [119]
It is number 3 why beacseu if u don’t have the length them u can’t do the equation
4 0
2 years ago
Which of the following best describes the graphs below?
Sati [7]

Answer:

D

Step-by-step explanation:

Look at all possibilities then use  all of them then find out which one matches the best.

8 0
3 years ago
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