Texas Instruments TITANIUM TI-89 - Manual (Page 745)

Activities 745
4. Divide both sides of the equation by the
leading coefficient a .
Note: Continue to use the last answer
( 2 ±) as in step 3 in steps 4 through
9.
5. Use the expand( ) function to expand the
result of the last answer.
6. Complete the square by adding ((b/a)/2)
2
to both sides of the equation.
7. Factor the result using the factor( )
function.
8. Multiply both sides of the equation by 4a
2.