Question

Can someone help me with this plz...

Answer 1

0.0075(x^3-x^2)
how do i multiply this

Answer 2

@Shadow

Answer 3

Distributive properly:\[a(b + c)\]
You multiply a by both b and c. Although this is it's most simplified form, and doing so would expand it.

Answer 4

the teacher also mentions graphing it so i would be good to go to graph this?

Answer 5

I am unfamiliar with how to graph expressions in this form, I would refer to here: https://www.wolframalpha.com/input/?i=0.0075(x%5E3-x%5E2)

Answer 6

Copy and paste the link into your browser, or input the expression into Wolfram yourself here: https://www.wolframalpha.com

Answer 7

ah thank you one last thing is this correct including distributing it and everything 0.0075(7x^2)=0.0525

Answer 8

No..

Answer 9

Input into wolfram and it will show you the expanded form, but the coefficient 0.0075 attaches to x^3 and -x^2

Answer 10

I am unsure where you got this stuff "(7x^2)=0.0525"

Answer 11

no i multiplied 0.0075(7x^2)

Answer 12

would it be more clear if i showed you the original problem?

Answer 13

Yes..

Answer 14

http://prntscr.com/lqbm3w my two volumes for the first candle is (x^3-x^2) and the second candle is (7x^2)

Answer 15

so i started off by multiplying 3/4*0.01 = 0.0075 then i multiplied that by my volumes

Answer 16

Hmm I am not entirely sure on how to approach this. Perhaps @Hero could take a look. He's better at this sort of thing than me.