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QueenNerdy889
22.07.2019 •
Mathematics
Which of the following represents the zeros of f(x) = 2x3 − 5x2 − 28x + 15? 5, −3, −1 over 2 5, −3, 1 over 2 5, 3, −1 over 2 5, 3, 1 over 2
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Ответ:
B) 5, −3, 1 over 2 are the zeros of f(x).
Step-by-step explanation:
Given function f(x)=![2x^3-5x^2-28x+15](/tpl/images/0119/2989/659b7.png)
If a is a zero of f(x) then f(a)=0
Let's check all the options
Therefore , 5 and -3 are zeroes of f(x).but -1/2 is not.
⇒ 1/2 isthe third zero of f(x).
Here we got our three zeroes as 5,-3,1/2,rest other will not satisfy f(a)=0
Therefore B represents the zeroes of f(x).
Ответ: