Question

List all real values of x such that f(x)=0. If there are no such real x, type DNE in the answer blank. If there is more that one real x, give a comma separated list (i.e.: 1,2).

f(x)=(15x−9)/19
x=?

Answer 1

Answer:

List all real values of x such that f (x) = 0. If there

are no such real x, type DNE in the answer blank. If there is

more that one real x, give a comma separated list (e.g. 1,2).

f(x)= (-3/x-7)+(-8/x+5)

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!

(-3/x-7)+(-8/x+5) = 0

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Multiply thru by (x-7)(x+5) to get:

-3(x+5) - 8(x-7) = 0

-11x -15+56 = 0

-11x = -41

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x = 41/11

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Cheers,

Stan H.