simplify radical expressions?

0 ⤊

(sqrt 3 +5) (sqrt 3 -3)

2007-12-18 08:55:02 · 3 answers · asked by God Bless America!~ 4 in Science & Mathematics ➔ Mathematics

3+5sqrt 3-3sqrt 3-15

-12 +2 sqrt 3

2007-12-18 09:40:36 · answer #1 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋

3 - 3sqrt 3 + 5sqrt 3 - 15

-12 + 2sqrt 3

2007-12-18 17:01:26 · answer #2 · answered by ben e 7 · 0⤊ 0⤋

Use foil
3 - 3sqrt(3) + 5sqrt(3) - 15
= -12 + 2sqrt(3)

2007-12-18 17:01:00 · answer #3 · answered by norman 7 · 0⤊ 0⤋