solutions of x squared minus 6x minus 216?
2007-05-11 12:17:47 · 10 answers · asked by lilchocoluver62 2 in Science & Mathematics ➔ Mathematics
thanks everyone!! that helped a lot!!
2007-05-11 12:38:06 · update #1
thak u soo much everyone i FINALLY understand it!!
2007-05-11 14:55:07 · update #2
use the formula
x= (-b + sqrt(sqr(b) - 4*a*c))/(2*a) and
x =(-b - sqrt(sqr(b) - 4*a*c))/(2*a)
to get the values of x that satisfy the equation a*sqr(x) + bx + c =0
plugin the values of a b and c into the above formula to get
x= -12 and x= 18
for your equation a=1, b = -6 and c = 216
2007-05-11 12:26:14 · answer #1 · answered by max 4 · 1⤊ 1⤋
x^2 - 6x - 216
You want two factors whose difference is 6. 216/2 = 108, so that won't work. 216/3 = 72; 216/4 = 54; 216/8 = 27; 216/9 = 24, 216/12 = 18...this one works. So factor with 12 and 18.
2007-05-11 12:29:56 · answer #2 · answered by Anonymous · 0⤊ 0⤋
x^2 - 6x -216
216 potential factors are 2&108, 4&54, 8&27, 24&9, 36&6, 18&12
12-18 = -6
(x+12)(x-18)
2007-05-11 12:29:13 · answer #3 · answered by shanusav 2 · 0⤊ 0⤋
m^3-216 (m-6)(m^2+6m+36)
2016-05-21 00:09:30 · answer #4 · answered by alma 3 · 0⤊ 0⤋
use the quadratic formula
a=1,b=-6, c=-216
-(b)+/- root[ b^2-4ac]/2a
-(-6)+/-root[ (-6^2)-4(1)(-216)]/2= 6+/-root[900]/2= [6+-30] /2
= 36/2, 24/2= 18,-12
so x=18,-12 or (x-18)(x+12)=0
Hope this helps!!!
2007-05-11 12:30:48 · answer #5 · answered by Andrew H 4 · 0⤊ 0⤋
X^2 - 6x - 21 6
_ _ _ _ _ _ _ _ _
1 X 216
2 X 108
3 X 72
4 X 54
6 X 36
8 X 27
9 X 24
12 X 18
(x + 12 ) ( x - 18)
(x + 12) = 0 .. .. .. or .. .. ..(x - 18) = 0
x + 12 = 0 . .. .. .. .. ... .. .. x - 18 = 0
X = - 12 .. . .. .. .. . .. .. .x = 18
2007-05-11 12:33:38 · answer #6 · answered by Anonymous · 0⤊ 0⤋
= (x + 12).(x - 18)
2007-05-12 06:12:08 · answer #7 · answered by Como 7 · 0⤊ 0⤋
x^2-6x-216
(x+12)(x-18)
factors of 216
1,216 2,108 3,72 4,54 6,36 8,27 9,24 12,18
2007-05-11 12:44:08 · answer #8 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
(x - 18)(x - 12)
x = 12 and 18
2007-05-11 12:21:49 · answer #9 · answered by eirikir 2 · 0⤊ 3⤋
2,113,3,72,4,54,6,36,8,27,9,24,12,18 are the factors of 216
2007-05-11 12:32:35 · answer #10 · answered by the.dibster 2 · 0⤊ 0⤋