2006-08-17 14:15:58 · 7 answers · asked by Brad C 1 in Education & Reference ➔ Homework Help
Please clarify what you mean.
I think this what you meant:
(x+2)(x-2) factors out to x2-2x+2x-4=0
simplified to x2-4. (-2x and 2x cancel out)
x2-4=0 is simplified further by adding 4 to
both sides of the equation. You'll get x2=4
and 2 squared is 4 so x is = 2
You should probably show your check step too:
2(2)=4
2006-08-17 18:34:59 · answer #1 · answered by Ammy 6 · 0⤊ 0⤋
Have you learned Algebra?
If you dont know, it camefromthe concept of algebra........especially FACTORING.....
Therefore, (x+2) (x-2) is the factor of x squared minus 4..........whereas, (x-2) (x+2) is the factor of x squared minus four.......the same dude........the same application.........
2006-08-17 14:24:52 · answer #2 · answered by Val b 2 · 0⤊ 0⤋
Please clarify your question...
For a provisional answer to one possible interpretation of the question:
(x+2)(x-2) is x^2-4 ("x squared minus 4")
2006-08-17 14:19:49 · answer #3 · answered by Anonymous · 0⤊ 0⤋
-4x + 4 on the dotted line???
I don't know, I need a little more information
2006-08-17 14:21:05 · answer #4 · answered by Susana C 3 · 0⤊ 0⤋
(x+2)(x-2) = x^2 - 4
x+2x-2 = 3x- 2 ??
???????
2006-08-17 14:20:53 · answer #5 · answered by Kris 2 · 0⤊ 0⤋
what?
you need some more details for this question to make sense
2006-08-17 14:20:00 · answer #6 · answered by jester 2 · 0⤊ 0⤋
get a calculator
2006-08-17 14:20:27 · answer #7 · answered by pinkstealth 6 · 0⤊ 0⤋