Texas Instruments TI-89 Titanium User Manual page 728

4. Divide both sides of the equation by the
leading coefficient
Continue to use the last answer
Note:
(2 ±) as in step 3 in steps 4 through
9.
5. Use the
expand( )
result of the last answer.
6. Complete the square by adding
to both sides of the equation.
7. Factor the result using the
function.
8. Multiply both sides of the equation by
9. Take the square root of both sides of the
equation with the constraint that
and .
b>0 x>0
Activities
.
a
function to expand the
((b/a)/2)
factor( )
a>0
2
2.
4a
and
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