It seems that I have set x equal to something. How do I undo this so that my ti89 tells me it =(x^2 + 2x +1) ?
2007-08-27 08:20:40 · 5 answers · asked by RogerDodger 1 in Science & Mathematics ➔ Mathematics
go to VAR LINK
and delete variable x
or go to apps (applications) and go to number 9:f(x)
and click F6 and click enter (yes)
2007-08-27 08:28:48 · answer #1 · answered by The Answer 3 · 0⤊ 0⤋
You should be able to graph and solve this with this calculator.
Try going through the Plot or Solve functions and putting this equation in.
By the way (x+1)^2 = 36 is the same as (x^2 +2x +1) = 36
It is just a parabola (positive type) with a intercept at x = -1
2007-08-27 15:44:30 · answer #2 · answered by thehazmater 2 · 0⤊ 0⤋
(1 + x)^2 = 36
Then
(1 + x )(1 + x) = 36
Multiply together using FOIL
1 + x + x + x^2 = 36
1 + 2x + x^2 = 36
x^2 + 2x - 35 = 0
Factorisng
(x + 7)(x - 5) = 0
therefore
x = -7 or x = 5
2007-08-27 15:26:47 · answer #3 · answered by lenpol7 7 · 0⤊ 1⤋
Looks like X was set to 5.
2007-08-27 15:26:59 · answer #4 · answered by ngcolin 2 · 0⤊ 0⤋
"Delvar x"
delete variable x
You can also do this from the memory menu.
2007-08-27 15:24:10 · answer #5 · answered by MooseBoys 6 · 0⤊ 0⤋