Texas Instruments PLUS TI-89 - Manual (Page 404)

Chapter 23: Activities 387
23ACTS.DOC TI-89/TI-92 Plus: Activities (English) Susan Gullord Revised: 02/23/01 1:24 PM Printed: 02/23/01 2:20 PM Page 387 of 26
7. Factor the result using the
factor() function.
8. Multiply both sides of the
equation by 4a ñ .
9. Take the square root of both
sides of the equation with the
constraint that
a>0 and b>0 and
x>0 .
10. Solve for x by subtracting b
from both sides and then
dividing by
2a .
Note: This is only one of the
two general quadratic
solutions due to the
constraint in step 9.