Question

hey i need help plzzzz


-7/(x^2-2x-15)

Answer 1

you trying to solve? graph?

Answer 2

What is the excluded value?

Answer 3

my bad

Answer 4

We need to find where x^2-2x-15=0
now we can use the quadratic formula to find x
x=-b+/-sqrt(b^2-4ac)/2a
here a=1 b=-2 and c= -15
x=2+/-sqrt(-2^2-4(1)(-15)/2(1)
x=2+/-sqrt(64)/2
x=2+/-8/2
so x=2+8/2=5 or x=2-8/2=-3
the excluded values* are 5 and -3

Answer 5

sorry im bad at latex

Answer 6

hey ty

Answer 7

that make sense right ?

Answer 8

yes

Answer 9

you can check by plugging them back in the denominator=0 so it undefined at those values