Question

Hi can I has help?

Answer 1

The length of a rectangle is (6x2 + 3x - 2) units, and its width is (x3 - 2x + 5) units.

Part A: What is the area of the rectangle? Show your work. (5 points)

Part B: Does the answer for Part A show that polynomials are closed under an operation? Justify your answer. (3 points)

Part C: What is the degree and classification of the expression obtained in Part A? (2 points)

Answer 2

@thomaster @dan815 @zepdrix

Answer 3

Hi! I'll try to help!

Answer 4

The area is the length times the width. They give you both, even though they are long and tedious!

Answer 5

I got I got 6x^5 + 3x^4 - 14x^3 + 24x^2 + 19x - 10

Answer 6

\[A=(6x ^{2}+3x-2)(x ^{3}-2x+5)\]You will have to multiply that all out to find the area. Crazy, huh? let me do it, too and I will be right back to you.

Answer 7

I'm not that dumb\[But I am on a high level of Dumbness\]

Answer 8

Good, that part A is correct.

Answer 9

Whoa http://www.google.com/imgres?imgurl=&imgrefurl=http%3A%2F%2Felohell.net%2Fchill%2F297929%2Fjinx-art&h=0&w=0&tbnid=JSjc2f1Ot6SyGM&zoom=1&tbnh=156&tbnw=208&docid=49Y_LY_4NJZmlM&tbm=isch&ei=5XW4U62zOYWRyAT7uYHoCA&ved=0CAIQsCUoAA

Answer 10

Ok what is part B?

Answer 11

@IMStuck

Answer 12

What was part B @dan815 because I got 6x^5 + 3x^4 - 14x^3 + 24x^2 + 19x - 10

Answer 13

I don't think it shows closure though

Answer 14

But does it?

Answer 15

B) do you know what closed under an operation means?
C) = degree 5 polynomial

Answer 16

Yes, like how even plus an even will always be even for a sum

Answer 17

But this doesn't show closure as it expanded so much more that the original 2 polynomials

Answer 18

@Whitemonsterbunny17

Answer 19

yeah its not closed then by your definition the classification is changing

Answer 20

ok , so for part b polynomials are closed under an operation? Justify your answer.
yes the are , u multibly 2 polynomials and you got a polynomial as an answer

Answer 21

degree and the trinomial or whatever nthnomial is becoming a polynomial in your case, sometimes it can be even less than the original mial

Answer 22

Thank you all so much!

Answer 23

i dunnooo.. tho
we can argue that a polynomial * polynomial = polynomial in ur case so...

Answer 24

whats the answer ikramooo

Answer 25

dan its a closed set under × + -
only devides that make doubt , how ever if you have a*b both polynomial then the degree of a*b = degree of the greatest power of a * the degree of greatest power of b

Answer 26

Why not zoidberg