User Manual

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.