Suppose a^2 - a - 2 represents the area of a rectangle. What factors would represent the length and width of that rectangle?
A) (a + 1)(a - 2)
B) (a - 1)(a + 2)
C) Both A and B
D) Neither A nor B
2007-06-03 03:08:25 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
A
Factoring, we get a^2-a-2 = (a+1)(a-2) = A
Expanding b, we get (a-1)(a+2) = a^2+a-2, which is not what we want, so B does not work.
Thus, only A can represent the width and length of the rectangle.
2007-06-03 03:11:02 · answer #1 · answered by JasonM 7 · 4⤊ 0⤋
A) (a+1)(a-2) = a^2 - a - 2
2007-06-03 03:26:20 · answer #2 · answered by pgd_malaka 6 · 0⤊ 0⤋
A) (a + 1)(a - 2)
2007-06-03 03:19:30 · answer #3 · answered by Michael B 2 · 0⤊ 0⤋
A) (a + 1)(a - 2)
2007-06-03 03:16:33 · answer #4 · answered by iyiogrenci 6 · 0⤊ 0⤋
the answer is A)
(a+1) (a-2)
= a^2 - 2a + a - 2
= a^2 - a - 2
2007-06-03 03:14:27 · answer #5 · answered by carleen r 1 · 0⤊ 0⤋
letter is A:
if you factor it:
= a^2 - 2a + a - 2
= a^2 -a - 2
2007-06-03 03:17:23 · answer #6 · answered by fernan_enad 2 · 0⤊ 0⤋
A) multiply and you will get back the answer
2007-06-03 03:12:33 · answer #7 · answered by Anonymous · 0⤊ 0⤋
A
2007-06-03 03:13:25 · answer #8 · answered by D Kool 2 · 0⤊ 0⤋