(2 square root of 2) -2 all divided by 2
I keep thinking all the two's outside of the square root sign cancel out but I'm not sure
2007-02-05 12:48:17 · 4 answers · asked by Nicky 2 in Science & Mathematics ➔ Mathematics
I only put the parentheses there to show that the minus 2 is outside of the radical
2007-02-05 12:52:34 · update #1
yes....
(2(2^(1/2))-2)/2
= 2^(1/2) - 1
=sqrt (2) - 1
2007-02-05 12:52:21 · answer #1 · answered by Brian F 4 · 0⤊ 0⤋
no, you can't cancel something unless it's multiplied by the whole numberator. What you can do is to factor out a 2 from the top:
2(sqrt(2) - 1) .... NOW you can cancel the 2(on the top) with the 2(on the bottom.
2007-02-05 12:51:59 · answer #2 · answered by koolkat 3 · 0⤊ 0⤋
No, nothing, because it's in parenthesis. If it wasn't in parenthesis then you could take out the 2 that is outside the square root.
2007-02-05 12:51:34 · answer #3 · answered by Dan 1 · 0⤊ 0⤋
{2sqrt(2) - 2}/2 = sqrt(2) -1,
So yes, they cancel.
2007-02-05 12:51:57 · answer #4 · answered by bozo 4 · 0⤊ 0⤋