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Recall that a
real zero is where a graph crosses or touches the x-axis.
Think of some points along the x-axis.
What are the
y
values? 0!
And remember that
f(x)
is just a fancy function name for
y...
So, if we set
 |
and solve... |
We get the
real zeros!
Check it out:
Let's see where it crosses the x-axis:
So, the real
zeros are
-2 and
3
Continued on the
next
page
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