Divide x3 − 4x2 + 120 by x + 4
2007-01-19 17:02:10 · 4 answers · asked by Antonello D 1 in Science & Mathematics ➔ Mathematics
Synthetic division:
−4 | +01 −04 +00 +120
----| +00 −04 +32 −128
------------------------------
----| +01 −08 +32 −008
So the answer is x² - 8x + 32, with a remainder of 8.
(Do you know how to do synthetic division?)
christine did her division right, but she messed up where the -4 goes, I think.
2007-01-19 17:12:18 · answer #1 · answered by Jim Burnell 6 · 2⤊ 0⤋
x^3 -4x2 +120 =(x+4)(x^2-8x+32) -8
2007-01-20 06:16:16 · answer #2 · answered by santmann2002 7 · 0⤊ 0⤋
x3-4x2+12x+(72/x+4)
work:
-4) 1 0 -4 120
___________
1 -4 12 72/x+4
2007-01-20 01:09:07 · answer #3 · answered by ♥♥♥♥♥ 5 · 2⤊ 0⤋
x^2-8x+32 remainder: -8
x^2 -8x +32
x+4|x^3-4x^2+0x+120
x^3 +4x^2
-8x^2+0x
-8x^2-32x
32x+120
32x+128
-8
2007-01-20 01:12:38 · answer #4 · answered by aznskillz 2 · 2⤊ 0⤋