2007-07-27 18:35:03 · 19 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
x + x - 2 + 2 = 2x
2007-07-29 15:51:00 · answer #1 · answered by sweetwater 7 · 2⤊ 0⤋
x + x - 2 + 2 = 2x
2007-07-27 20:26:53 · answer #2 · answered by Como 7 · 0⤊ 0⤋
All you need to do is drop the parentheses. So you get:
x-2+x+2
Notice the -2 +2 brings you back to zero, so you can get rid of that which leaves you with
x + x
which equals 2x
Think of the x's as being something more tangible like
1 apple + 1 apple = 2 apples
Or if you like money... make them the x's dollars
$1 + $1 = $2
2007-07-27 18:51:38 · answer #3 · answered by Janelle V 3 · 0⤊ 0⤋
(x-2)+(x+2)= x-2+x+2
= 2x
2007-07-27 18:38:47 · answer #4 · answered by Clov 2 · 1⤊ 0⤋
(x-2) + (x+2)
Find the like terms
x plus x = 2x
-2 plus 2= 0
The correct answer is 2x.
The rule of adding algebraic expression is that you should only add like terms. Then proceed to addition. Okay!
2007-07-27 19:18:47 · answer #5 · answered by pn 2 · 0⤊ 0⤋
x-2+x+2=2x
2007-07-27 18:43:22 · answer #6 · answered by Anonymous · 1⤊ 1⤋
(x-2)+(x+2)
Get rid of parenthesis
=x-2+x+2
Combine like terms
=x-2+x+2
=x+x-2+2
=x+x
=2x
2007-07-28 02:13:43 · answer #7 · answered by baumers23 1 · 0⤊ 0⤋
(x-2)+(x+2)
=x-2+x+2
=x+x+2-2
=2x+0
=2x
2007-07-27 19:02:55 · answer #8 · answered by Prasanta Dey 1 · 0⤊ 0⤋
26
2007-07-27 18:40:07 · answer #9 · answered by tgypoi 5 · 1⤊ 1⤋
(x-2)+(x+2)
=(x-2)+x+2 ..............as +(x+2)=+x+2
=x-2+x+2
=x+x-2+2
=x+x
=2x
if you mistyped the question, actually what you want to ask is
(x-2)(x+2),................ then answer would be
=x*x + 2x - 2x -4
=x^2-4
so when somebody asking for factoring
"X^2-4", answer is (x-2)(x+2)
too long winded ? !! yes, i am (:
2007-07-27 18:44:40 · answer #10 · answered by cOPYcAT 5 · 0⤊ 0⤋