Expand and simplify:?

1 ⤊

(y+1)(y-1)

2006-08-16 22:45:45 · 5 answers · asked by Tash 1 in Science & Mathematics ➔ Mathematics

y^2 - 1

2006-08-16 22:52:24 · answer #1 · answered by ettezzil 5 · 1⤊ 0⤋

(y+1)(y-1)
=y^2 - 1

2006-08-17 05:55:24 · answer #2 · answered by Prakash 4 · 0⤊ 0⤋

(y+1)(y-1) = yÂ² +y -y -1 = yÂ² -1

Doug

2006-08-17 05:53:46 · answer #3 · answered by doug_donaghue 7 · 0⤊ 0⤋

(y + 1)(y - 1)
y^2 - y + y - 1
y^2 - 1

2006-08-17 11:00:09 · answer #4 · answered by Sherman81 6 · 0⤊ 0⤋

(y+1)(y-1)
=(y2-y+y-1)
= (y2-1)

2006-08-17 06:01:01 · answer #5 · answered by Hugo Afkhar 3 · 0⤊ 0⤋