2006-11-27 02:15:00 · 3 answers · asked by Trinity 1 in Science & Mathematics ➔ Mathematics
Taking x common from (x^2 - ax)/x , we get x(x - a) /x which gives us (x-a). Now, (x + a)(x - a) gives us (x^2 - a^2)
2006-11-27 02:24:00 · answer #1 · answered by l_kur 5 · 0⤊ 0⤋
well, in algebra, you generally don't want get rid of variables by dividing by them. This gets rid of possible roots later on. unfortunately, this question forces you to do this.
To make it easier, do the division first: (x^2-ax) / x = (x-a). Then, do the multiplication: (x+a) * (x-a) = (x^2-a^2)
There you have it.
2006-11-27 10:33:29 · answer #2 · answered by what_m_i_doing 2 · 0⤊ 0⤋
First, the x can be factored out of (x² - ax) leaving you with:
(x + a) * (x - a)
Your final answer is then:
x² - a²
2006-11-27 10:21:10 · answer #3 · answered by Dave 6 · 0⤊ 0⤋