Problemas
Find all y-intercepts and x-intercepts of the graph of the function. f(x)=2x^3+2x^2-24x If there is more than one answer, separate them with commas. Click on "None" if applicable. y -intercept(s): square x -intercept(s): square
Roztwór
Anastasia
élite · Tutor durante 8 años
4.4
(272 Votos)
Respuesta
To find the y-intercept of the function
, we need to evaluate the function at
.Substituting
into the function, we get:
Therefore, the y-intercept is
.To find the x-intercepts of the function
, we need to solve the equation
.Setting the function equal to zero, we have:
Factoring out the common factor of
, we get:
Now, we can set each factor equal to zero and solve for
:
or
Solving the first equation, we get:
Solving the quadratic equation
, we can use the quadratic formula:
Plugging in the values
,
, and
, we get:
Therefore, the x-intercepts are
,
, and
.So, the y-intercept is
and the x-intercepts are
,
, and
.