Question

[7.06] Choose the correct simplification of 8x2(5x + 2x2 − 3).

16x4 − 40x3 + 24x2

16x4 + 40x3 − 24x2

40x4 + 16x3 − 5x2

40x4 − 10x3 + 5x2

Answer 1

\[8x^2(5x + 2x^2 − 3)\]
??

Answer 2

Distribute the \(8x^2 \) to all the terms inside the \(( ) \)

Answer 3

will it be this 16x4 − 40x3 + 24x2

Answer 4

Fellica watch the minus sign.

Answer 5

so this one 16x4 + 40x3 − 24x2

Answer 6

So:
8x^2 * 5x = 40x^3
8x^2 * 2x^2 = 16x^4
8x^2 * -3 = -24x^2

then:
16x^4 + 40x^3 - 24x^2

Answer 7

yup good :) @Felicia123

Answer 8

thanks

Answer 9

no prob

Answer 10

[7.07] Which expression is equivalent to the area of metal sheet required to make this square shaped traffic sign?

A square shaped traffic sign is shown with length of one side labeled as 2x − 1.

4x2 - 1

4x2 + 1

4x2 + 4x - 1

4x2 - 4x + 1

Answer 11

http://learn.flvs.net/webdav/assessment_images/educator_algebra1_v14/07_12_78.jpg

Answer 12

link broken

Answer 13

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Answer 14

tat is what it says in the link ^

Answer 15

ok hold on lol

Answer 16

Are you looking for the area?

Answer 17

I don't know

Answer 18

help me please i don't know what to do and i don't know what i am looking for help

Answer 19

Well It looks like a square so for area do

\[(2x-1)^{2} = (2x-1) \times (2x-1)\]

If its perimeter do.
\[P = 4(2x -1)\]

Answer 20

be this one 4x2 + 4x - 1 mebs

Answer 21

or this 4x2 + 1

Answer 22

No it would bee.

4x2 -4x +1

Answer 23

got to be this one 4x2 + 1

Answer 24

why?