(a)
\The polynomial function is
.
Draw a coordinate plane.
\Graph the function
.
Graph of the function
is : \ \
=t%5E4-7t%5E2+12.gif\")
Observe the above graph :
\The zeros are
.
(b)
\The polynomial function is
.
The leading coefficient (
) is 1 and constant term is 12.
The possible rational zeros : 

.
The possible rational zeros of polynomial are
.
\
Determine that
is a rational zero by using the synthetic division.

Determine that
is a rational zero by using synthetic division.

\
Factor the resulting quadratic expression.
\

Apply Formula :
.

The complete factorization of f(x) is
.
Find the real zeros of the function by equating
to zero. \ \




The real zeros of the function are
.
(c)
\The complete factorization of f(x) is
.
(a)
\Graph of the function
is : \ \
=t%5E4-7t%5E2+12.gif\")
The zeros are
.
(b)
\The real zeros of the function are
.
(c)
\The complete factorization of f(x) is
.