factor: 45=2L^2?

1 ⤊

2006-12-30 06:23:28 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

Ninja had the right idea, but he didn't simplify.

2L² = 45
L² = 45/2 = 90/4
L = ±√90/2 = ±3√10/2

2006-12-30 06:30:29 · answer #1 · answered by Jim Burnell 6 · 0⤊ 0⤋

2L^2 = 45
L^2 = 45/2
L = +/- sqrt(45/2)

2006-12-30 14:28:55 · answer #2 · answered by Super Ninja Attack Force 2 · 1⤊ 0⤋

45=2L^2
2l^2-45=0
2(l^2-22.5)=0
(l-â22.5)(l+â22.5
l=â22.5, -â22.5 or
l=15â.1, -15â.1

2006-12-30 14:58:54 · answer #3 · answered by yupchagee 7 · 0⤊ 0⤋