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How do you find all the zeros of # f(x) = (x + 3)(x – 1)(x – 5)#?

1 Answer

Shwetank Mauria

Mar 16, 2016

#{-3,1,5}# are zeros of #f(x)=(x+3)x-1)(x-5)

Explanation:

Zeros of #f(x)# are those values of #x#, which make #f(x)=0#.

As #f(x)=(x+3)x-1)(x-5)#, #f(x)# will be zero, if

#x+3)=0# or #x-1)=0# or #(x-5)=0# i.e.

#x=-3# or #x=1# or #x=5#

Hence, #{-3,1,5}# are zeros of #f(x)=(x+3)x-1)(x-5)#

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