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i would really appreciate it if someone would actually help me this time!...
ok ill help u
thank you somuch!
this would be your equation (x^1/2-x)-(2x^3-x^12)
Answers are: -2x^3-2x-2x^1/2 -2x^3-2x 2x^3-2x+2x^1/2 -2x^3+2x^1/2
okay... my is like my worst subject so, could you explain how to do that? please
umm hmm this one is tough
yeah ik DX
you know that we can write x^1/2 as √x right?
i didnt know that
well you should try and remember that its pretty useful :)
so if we have f(x) - g(x) we can write this as (√x - x) - (2x^3 - √x)
do you know how you would simplify - (2x^3 - √x)?
thank you so much, math is my worst subject but im almost done with the class. thanks for helping!! (:
let me try, but most likely no
nope i dont
okay so imagine there is a 1 after the - sign so you have to simplify -1(2x^3 - √x) do you know the FOIL method?
i forgot it havent done it in a while
is it -2x^3+2x^1/2
yup! thats correct!
omg thanks so much!!
would you mind helping me out i have three more questions left?
so now we have x^1/2 - x - 2x^3 + x^1/2 and we want to simplify this by collecting like terms
were nearlyyyy finished with this question ahahha
oh haha i thought we were alredy done lol i already went on to the next question
lol dw we're close
can we skip that one ?
A machine is set up to cut metal strips of varying lengths and widths based on the time (t) in minutes. The change in length is given by the function l(t)=t^2 - sq. root of t, and the change in width is given by w(t)=t^2 - 2t 1/2. Which function gives the change in area of the metal strips?
okay do you know formula for the area of a rectangle?
Answers: a(t)=t^4+2t a(t)=t^4+2t+3t^5/2 a(t)=t^4-3t^5/2+2t a(t)=t^4+2t-2t^1/2+square root of t
yup so we want to do l(t) x w(t) do you see why?
wait yes i do