maath problem help!?

0 ⤊

a rectangle room has a floor space of 2X(squared) + X- 15. If the width of the room (x+3) feet, what is the length?

2007-06-14 15:13:57 · 5 answers · asked by jen r 1 in Science & Mathematics ➔ Mathematics

A = lw

l = 2x - 5

2007-06-14 15:16:28 · answer #1 · answered by de4th 4 · 0⤊ 0⤋

A = wL

2x^2 + x - 15 = (x + 3) L

divide x + 3 for both sides
L = 2x - 5

2007-06-14 22:18:15 · answer #2 · answered by 7 · 0⤊ 0⤋

The length is 2x - 5.

Doug

2007-06-14 22:18:50 · answer #3 · answered by doug_donaghue 7 · 0⤊ 0⤋

length is 2x - 5

2007-06-14 22:16:54 · answer #4 · answered by cheeseballer 3 · 0⤊ 0⤋

LW = area

L(x + 3) = 2XÂ² + X - 15

L(x + 3) = (x + 3)(2x - 5)

Divide thru by (x + 3)

L = (2x - 5)
.

2007-06-14 22:19:54 · answer #5 · answered by Robert L 7 · 0⤊ 0⤋