Please help
Evaluate the polynomial function for the given values of the variable
P(s)=2sᶟ-9s-10 P(1/2) and P(0)

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- anonymous

- schrodinger

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- anonymous

my pc froze had to restart website

- anonymous

at 1/2 it is -57/4
at 0 it is -10

- anonymous

need step by step explanations
how did you get -57/4

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## More answers

- anonymous

P(1/2) = 2(1/2)^3 - 9(1/2) - 10
P(1/2) = -57/4
P(0) = -10

- anonymous

is that good enough?

- anonymous

2(1/2)^3=1/4
9(1/2)=9/2
1/4-9/2-10
this is where i am stuck what do i do to get the correct answer

- anonymous

okay so
\[\frac{1}{4}-\frac{18}{4}- \frac{40}{4}= -\frac{1-18-40}{4} = \frac{57}{4}\]

- anonymous

How do you do fractions chiarocuro?

- anonymous

what do you mean?

- anonymous

to add and subtract, you have to find a common denominator (preferably a LEAST common denominator) and change the fraction accordingly. Then add and subtract.
to multiply, you just multiply numerator by numerator and denominator by denominator
to divide, flip (the reciprocal) the fraction right after the dividing sign and then multiply

- anonymous

lol you're silly. I mean how make fractions come out in equations? like you did there.

- anonymous

lololols oops
sorry
in the equation editor type \frac{numer}{deno}
replacing numer and deno for numbers
cheers

- anonymous

ok thanks. So is equations like latex? That's what I use in latex to do fractions.

- anonymous

I'm never touched latex, so i couldn't tell you :x

- anonymous

i need fractions for dummies
p(1/4)=4(1/4)^3+9(1/4)-3
please explain this problem step by step i can not do fractions even the basic it nvr made sense to me

- anonymous

\[4*\frac{1}{4}*\frac{1}{4}*\frac{1}{4} + \frac{9}{4} - 3\]
\[\frac{1}{4}*\frac{1}{4} + \frac{9}{4} - 3\]
\[\frac{1 * 1}{4 * 4} + \frac{9}{4} - 3\]
\[\frac{1}{16} + \frac{9}{4} - 3\]
\[\frac{1}{16} + \frac{9 * 4}{4 * 4} - 3\]
\[\frac{1}{16} +\frac{36}{16} - 3\]
\[\frac{37}{16} - \frac{3}{1}\]
\[\frac{37}{16} - \frac{3 * 16}{1 * 16}\]
\[\frac{37}{16} - \frac{48}{16}\]
\[\frac{-11}{16}\]
sorry that took so long...but that was a lot of equations :P

- anonymous

mathlab says thats wrong its -83/16

- anonymous

nope i used my calculator to check, i'm right.
you can use matlab, but you don't know how to do fractions? please don't take offense! i'm just curious

- anonymous

we do our homework in mathlab and i know how to do fractions just forgot exactly how its been so long

- anonymous

copy this into matlab
4(1/4)^3+9(1/4)-3
^-- thats the line you gave me
it should give you -.6875, which is -11/16

- anonymous

we might be talking about different things then nvm
i'm talking about matlab
you're talking about mathlab
so nvm :P
but i'm sure i'm right, as long as you gave me the right question
but since you're trying to understand how to do fraction, just see if you can follow along the steps. because you want to know how to do it, not the answer

- anonymous

right

- anonymous

its a polynomial function given values of the variables p(-4) & p(1/4)
P(r)=4rᶟ-9r-3 P(-4) and P(1/4)

- anonymous

?

- anonymous

whoa...you still on this question? did you sleep?!?! O_O

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