does sqrt (a^2 + b^2) = a+b??
2007-10-09 18:50:02 · 4 answers · asked by garlin104300 1 in Science & Mathematics ➔ Mathematics
Nope.
for example:
a = 2, b = 4
(2^2 + 4^2) = 2 + 4
(4 + 16) = 6
20 = 6 is not true.
2007-10-09 18:52:36 · answer #1 · answered by Craig Y 2 · 0⤊ 0⤋
sqru (a^2 b^2) = a + b
ie... when multiplied, you can do that, but not adding)
example... sqrt 20 = sqrt (4 * 5) = sqrt 4 sqrt 5 = 2 sqrt 5
but.. sqrt 20 = sqrt ( 10 + 10) but does not equal sqrt 10 + sqrt 10
2007-10-10 04:35:10 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The answer is "No".
Example
â(3² + 4²) = â25 = 5
BUT
3 + 4 = 7
2007-10-10 02:44:34 · answer #3 · answered by Como 7 · 0⤊ 0⤋
continued...
sqrt(20)=6
4.472 = 6
which isnt true (so it does not equal)
2007-10-10 01:58:19 · answer #4 · answered by Matt H 2 · 0⤊ 0⤋