Algebra II
8.3 Approximating Zeros
Approximate to the nearest
tenth the real zeros for
g(x) = -2x3-5x2+3x+2,
then graph.
• Put function in the calculator
• Table set (start close to a
zero and count by tenths)
• Go to the table and look for y
to go from a + to a -
When graphing include...
• zeros
• relative max and min
• window
Date: _____
y
6
5
4
3
2
1
­8 ­7 ­6 ­5 ­4 ­3 ­2 ­1 ­10 1 2 3 4 5 6 7 8
­2
­3
­4
­5
­6
­7
­8
­9
­10
x