Is this correct?
+-1, -2
2006-09-01 10:45:16 · 6 answers · asked by Olivia 4 in Science & Mathematics ➔ Mathematics
Wouldn't it be...
x^3-x^2-4x+4=0
x^2(x-1) -4(x-1)
(x^2-4)(x-1)
x^2=4 x=1
x=+2
x=-2
+2, -2, +1
2006-09-01 10:54:45 · answer #1 · answered by Anonymous · 0⤊ 0⤋
x = 2, x= 1, or x = -2
2006-09-01 13:17:13 · answer #2 · answered by CSUFGrad2006 5 · 0⤊ 0⤋
Nop.
x^3 - x^2 – 4x + 4 =
x ( x^2 - 4 ) – ( x^2 – 4 ) =
( x^2 – 4 ) ( x – 1) =
(x + 2 )( x – 2 )( x - 1)
x = -2, +2, +1
2006-09-01 14:47:28 · answer #3 · answered by h2 2 · 0⤊ 0⤋
Yes.
1-1-4+4=0
0=0
(-2)^3-(-2)^2-4*(-2)+4=0
-8-4+8+4=0
0=0
+2 works also
2^3-2^2-4*2+4=0
8-4-8+4=0
0=0
2006-09-01 10:56:41 · answer #4 · answered by Anonymous · 0⤊ 0⤋
It will be correct if you do your own math, no Yahoo answer guy or gal will be next to you in an exam
2006-09-01 10:50:58 · answer #5 · answered by Lil' Gay Monster 7 · 0⤊ 0⤋
juss plug in the number and cheak DUHHHHHH
2006-09-01 10:51:58 · answer #6 · answered by gots_mad_paper 1 · 0⤊ 0⤋