Question

Medal

The length of a rectangle is (4x2 + 2x - 1) units, and its width is (3x3 - x + 4) units.

Part A: What is the area of the rectangle? Show your work

Part B: Does the answer for Part A show that polynomials are closed under an operation? Justify your answer

Part C: What is the degree and classification of the expression obtained in Part A?

Answer 1

@triciaal

Answer 2

would I use like terms

Answer 3

the area of a rectangle is length * width
A = L* W

Answer 4

o ok so I would use the distributive property

Answer 5

you will multiply the length by the width.
you use like terms to simplify calculations

Answer 6

12x^5-2x-4

Answer 7

yes use distributive property multiply each term inside by what is outside

Answer 8

you did that too quick

Answer 9

(4x2 + 2x - 1)(3x3 - x + 4) =?

Answer 10

4 x ^2(3x3 - x + 4) + 2x(3x3 - x + 4) -1(3x3 - x + 4) = ?

Answer 11

is this what you did?

Answer 12

12x^5 -4x + 16x^2

6x^4 -2 + 8x

-3x^3 + x -4

Answer 13

this is for
4x^2

2x

-1

Answer 14

then i add them together?

Answer 15

you have 12x^5 -4x + 16x^2 that should not be -4x

Answer 16

you have a problem getting the middle term
when you multiply by an x outside the parenthesis

Answer 17

4x^2 * (-x) = -4x^3 and 2 x*(-x) = -2 x^2

Answer 18

o ok

Answer 19

12x^5 -4x^3 + 16x^2

6x^4 -2x@ + 8x

-3x^3 + x -4

Answer 20

check your typo and this is all one expression so group like terms to simplify (when you submit it's all on one line)

Answer 21

ok thank you I gtg now bye

Answer 22

ok