Question

plz help do not get its for algebra 2

state the excluded values for each rational expression
2p
______
p-7

Answer 1

a function becomes undefined when
1. there is a square-root of a negative number and/or
2. there is a Divide-by-zero

now, in this problem, when can "1" or "2" happen?

Answer 2

1 can happen for -7 right

Answer 3

is there a square-root in your function?

Answer 4

no

Answer 5

so, "1" cannot happen...

Answer 6

now, check the second rule

Answer 7

I really just don't no how to do it can u plz run me though the problem

Answer 8

you are doing good.
we ruled out "type-1"
lets check for type-2
ok?

Answer 9

\[f(p)=\frac{2p}{p-7}\]
do you follow?

Answer 10

yes

Answer 11

there are no square-roots, so, type-1 cannot happen

for type-2, there should be a divide-by-zero... (e.g., 3/0 is undefined)

Answer 12

ok

Answer 13

ok so, when can you have a "0" in the denominator?
in other words, what value of "p" can make the denominator "0"?

Answer 14

yes

Answer 15

well, answer. what value of p?

Answer 16

that's the answer

Answer 17

dude can u plz just give me the answer

Answer 18

no, that is the question i am asking you.
in other words, we do not want a zero in the denominator.
are we good till here?