Question

Find the difference: (6y3 + 17y − 3) − (4y3 − 11y + 9)
2y3 + 28y + 12
2y3 + 6y − 12
2y3 + 28y − 6
2y3 + 28y − 12

Answer 1

http://www.wolframalpha.com/input/?i=%286y3+%2B+17y+%E2%88%92+3%29+%E2%88%92+%284y3+%E2%88%92+11y+%2B+9%29

Answer 2

first distribute the negative over the second parentheses

Answer 3

D

Answer 4

the last one??

Answer 5

Yes its the last one

Answer 6

ok medal goes to u thx

Answer 7

yay thank you

Answer 8

Find the sum: (3x2 + 5x − 8) + (5x2 − 13x − 5)
8x2 + 8x − 13
8x2 − 8x + 13
8x2 − 8x − 13
8x2 − x − 13

Answer 9

this one

Answer 10

c

Answer 11

ok can u work with me on the rest so i can know tjis stuff instead of u giving it to mee


Simplify the expression (2x − 9)(x + 6).
2x2 − 54
2x2 − 3x − 54
2x2 + 3x − 54
2x2 + 21x − 54

Answer 12

@beckyg111 Please dont just give the answer - guide the questioner through the problem

Answer 13

ya im tryin to learn can u help me

Answer 14

Ok sorry @welshfella can u help him i need to take a test

Answer 15

(2x − 9)(x + 6)

first you multiply the second part by 2x then multiply it by -9

= 2x(x + 6) - 9(x + 6)


ok so far?

Answer 16

yeah

Answer 17

right- now you distribute the 2x and the -9 over the 2 parentheses

= 2x*x + 2x*6 - 9*x -9*6

= 2x^2 + 12x - 9x - 54

notice the last term is negative 54 because you multiply negative times positive

Answer 18

so A is out?

Answer 19

now the 2 middle terms are alike so it simplifies to

2x^2 + 3x - 54

Answer 20

yes its not A

Answer 21

ok were did u get the 3x

Answer 22

12x - 9x = 3x

Answer 23

- combining like terms

Answer 24

theres only one x plus the 2x
aint no 12

Answer 25

2x^2 + 12x - 9x - 54
= 2x^2 + 3x - 54


the 2 middle terms are 12x and - 9x - they are like termsa so you can simplify them

Answer 26

ohh so its C?

Answer 27

yes

Answer 28

mb computer messin up

Answer 29

thx

Answer 30

yw

Answer 31

do u think u can do some more wit me

Answer 32

i can probably do one more I have to go soon.

Answer 33

ya me too
Simplify the expression -2x2(4x − 3).

Answer 34

8x3 − 6x2
-8x3 + 6x2
8x3 − 6x2
8x3 + 6x2

Answer 35

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

Answer 36

-2 * 4 = ?

Answer 37

remember negative * positive = negative