(√11 - √5) /( √11 + √5)
2007-02-28 02:36:12 · 4 answers · asked by spanishfly_100 1 in Science & Mathematics ➔ Mathematics
[(√11-√5)(√11-√5)]/[(√11+√5)(√11-√5)]
= (11-2√11√5+5)/(11-5)
= (16-2√55)/6
2007-02-28 02:57:50 · answer #1 · answered by Maths Rocks 4 · 0⤊ 0⤋
(â11 - â5) /( â11 + â5) * (â11 - â5) /( â11 - â5)
(â11 - â5)^2 /( 11 - 5)
(16 - 2â55) / 6
(8 - â55) / 3
2007-02-28 10:41:12 · answer #2 · answered by Moja1981 5 · 0⤊ 0⤋
OK,
U can use FOIL method if you want:
[(â11)(â11)+(â5)(â11)
+(-â5)(â11)+(-â5)(â5)]
Simplified:
11+â55-â55-5
11-5
=6
Or you can use the difference of squares
â11(squared)-â5(squared) Which will result in:
11-5 (again)
=6
2007-02-28 10:46:14 · answer #3 · answered by ĦΛЏĢħŦŞŧμρђ 2 · 0⤊ 0⤋
you so need to know how to do this instead of having others do your homework for you
2007-02-28 10:39:41 · answer #4 · answered by Rick 5 · 0⤊ 0⤋