how can those be equvalent? what rules apply?
2006-10-04 16:05:50 · 4 answers · asked by lanxxelot 1 in Science & Mathematics ➔ Mathematics
Multiply by radical(13) on the top and bottom (When you multiply by radical(13)/radical(13) you are just multiplying by 1 so nothing changes).
3 radical(13) / [radical(13)*radical(13)]
radical(13) times radical(13) is just 13.
= 3 radical(13)/13
If x is positive, then square root of x times square root of x is just x.
2006-10-04 16:07:40 · answer #1 · answered by MsMath 7 · 0⤊ 0⤋
If you multiply the first one by â(13)/â(13) (the equivalent of one) you get the second one. This is a simplification technique for rationalizing the denominator.
2006-10-04 23:11:52 · answer #2 · answered by just♪wondering 7 · 0⤊ 0⤋
3/(sqrt(13))
multiply top and bottom by sqrt(13)
(3sqt(13))/13
2006-10-04 23:52:47 · answer #3 · answered by Sherman81 6 · 0⤊ 0⤋
a / a = 1
(b / c) * 1 = (b / c)
(b / c) * (a / a) = (b / c)
b = 3
c = â13
a = â13
Substitute all these in, it'll make sense.
2006-10-04 23:09:03 · answer #4 · answered by bequalming 5 · 0⤊ 0⤋