Question

Help!!

Answer 1

we meet again

Answer 2

Choose the correct simplification of the expression (7x - 3)(4x^2 - 3x - 6).

28x^3 - 33x^2 - 33x - 18

28x^3 + 33x^2 - 33x + 18

28x^3 - 51x^2 - 33x + 18

28x^3 - 33x^2 - 33x + 18

Answer 3

Yes we do!

Answer 4

D?

Answer 5

Right okay I see how that worked!

Answer 6

(7x − 3)(4x2 − 3x − 6)

= 28x^3 - 21x^2 - 42x - 12x^2 + 9x + 18

= 28x^3 - 33x^2 - 33x + 18

Answer 7

oh okay xD

Answer 8

Choose the correct simplification of the expression -6x^2(4x - 7x^2 - 2).

42x^4 + 24x^3 - 12x^2

-42x^4 + 24x^3 - 12x^2

-13x^4 - 2x^3 - 8x^2

42x^4 - 24x^3 + 12x^2

Answer 9

C?

Answer 10

d.

Answer 11

Oh cause it's in standard decreasing order???

Answer 12

multiply each term and add the exponents

Answer 13

I was looking at it in like that way it was set up it totally confused me haha

Answer 14

mug so many replies .-.

Answer 15

the problem is not in standard order. You should re-arrange terms (to lessen the chance of making a mistake). the order does not change the answer, but it's easier to read

Answer 16

Yeah but the answers were in standard.. right?

Answer 17

yes, all the choices are in standard format.

btw, how did you get c?

Answer 18

I was just kind of guessing off of intuition and thought the first one was the result of -6x^2*4x and then maybe combined with another term or something, I was just confused

Answer 19

-6x^2 * 4x = -24x^3

-6x^2 * -7x^2 = 42x^4

-6x^2 * -2 = 12x^2

Answer 20

I asked, because one way to learn is understand the "bug" in your thinking (and then fix it)

In this case, it sounds more like "being lazy", because you could have multiplied each of the 3 terms by -6x^2, then put the answer into standard form. You probably would have gotten the correct answer if you did that.

Answer 21

I got that now, but I was just thrown off.

Answer 22

Can you help on just a few more in this that I didn't fully get?

Answer 23

The following table shows the length and width of two rectangles:


Length Width
Rectangle A x + 8 x - 1
Rectangle B 4x + 5 3x - 2


Which expression is the result of the perimeter of rectangle B minus the perimeter of rectangle A?
10x - 12

18x + 32

10x - 8

18x + 6

Answer 24

10x-8

Answer 25

2(4x+5)+2(3x-2)-2(x+8)+2(x-1)=10x-8

Answer 26

thanks a ton, I put it (x+1) at the end not -.... I feel stupid!

Answer 27

welcome c:

Answer 28

Choose the correct product of (5x - 11)^2.

25x^2 - 110x + 121

25x^2 - 121

25x^2 + 121

25x^2 + 110x + 121

Answer 29

It should be D right?

Answer 30

That one got me confused

Answer 31

a. because (5x-11)(5x-11)