Question

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.

Answer 1

area formula:
A=L*W

Answer 2

so:
A = (6x^2 + 3x - 2)(x^3 - 2x + 5)

Answer 3

yep but solve for doth sides first

Answer 4

no first solve for L and W then Multiply them both

Answer 5

it has a C...but all i need is up 2 b...

Answer 6

oh so a and b?

Answer 7

yup...an i dunno what it is...

Answer 8

oh ok just a sec

Answer 9

is it 6 multiplied bye 2?

Answer 10

no its:
(6x^2 + 3x - 2)(x^3 - 2x + 5)

Answer 11

oh

Answer 12

ok

Answer 13

dude what grade math is this

Answer 14

9th...i just really need help man..

Answer 15

ok ill try because im like in 7th but i do some collage math

Answer 16

You have it right undeadknight26:

A = (6x^2 + 3x - 2)(x^3 - 2x + 5)
A = 6x^5 + 3x^4 - 14x^3 + 24x^2 + 19x -10

Looks like a big derivative

Answer 17

thanks man :)

Answer 18

this might help

Answer 19

@biire2u does the answer for Part A show that polynomials are closed under an operation?

Answer 20

Factor x2y3 + xy
I can factor an "x" and a "y" out of each term: x2y3 = xy(x1y2) = xy(xy2) and xy = xy(1).

x2y3 + xy = xy( )

= xy(xy2 )

= xy(xy2 + 1)
Remember: When "nothing" is left after factoring, a "1" is left behind in the parentheses.

Factor 3x3 + 6x2 – 15x.
I can factor a "3" and an "x" out of each term: 3x3 = 3x(x2), 6x2 = 3x(2x), and
–15x = 3x(–5). Being careful of my signs, I get:

3x3 + 6x2 – 15x = 3x( )

= 3x(x2 )

= 3x(x2 + 2x )

= 3x(x2 + 2x – 5)

Answer 21

did u figure it out yet?

Answer 22

im on part B now...i used birr's answer...

Answer 23

oh ok i guess i can go now