x over x+2 + x-2 over x
2007-10-02 13:38:45 · 5 answers · asked by arod_69 1 in Science & Mathematics ➔ Mathematics
(x over x+2) + (x-2 over x)
2007-10-02 13:46:56 · update #1
I hope this is what you were saying:
x / (x+2) + (x-2)/x
LCD = x² +2x therefore;
x² + (x-2)(x+2) / (x² +2x) (said as, 'x squared plus the product of x minus two by x plus two, all over x squared plus two x')
=> x² + (x² -4) / (x² +2x)
= -4/(x² +2x)
2007-10-02 13:47:49 · answer #1 · answered by David F 5 · 0⤊ 0⤋
make the common denominator x(x+2)
multiply x by x and add (x-2) times (x+2)
[x^2 + (x-2)(x+2)] / x(x+2)
[(x^2 + x^2 - 4)] / x(x+2)
(2x^2 -4) / x(x+2)
2(x^2 - 2) / x(x+2)
2007-10-02 13:48:19 · answer #2 · answered by popngirl_14 2 · 0⤊ 0⤋
x/(x+2) + (x-2)/x
common demon = x(x+2)
= (x^2 + (x+2)(x-2) ) / x(x+2)
= (x^2 + x^2 - 4) / x(x+2)
= (2x^2 - 4) / x(x+2)
2007-10-02 13:51:59 · answer #3 · answered by norman 7 · 0⤊ 0⤋
= x/2x/x
=x * x/2x
= x squared/2x
=x/2
2007-10-02 13:42:47 · answer #4 · answered by Slater 3 · 0⤊ 0⤋
you need to have some parentheses in there so we know what's over what.
2007-10-02 13:41:54 · answer #5 · answered by Anonymous · 0⤊ 0⤋