CPhill

f(x)=x^3-2x^2-5x+6

Note, that if we can add the coefficients of a polynomial and we get "0," then 1 is a root (or, zero)..therefore....

1 - 2 - 5 + 6 

-1 + 1   = 0      So 1 is a root

So, using a little synthetic division, we have

1    1  -2  -5   6

           1  -1  -6

       1 -1  -6   0

So, the polynomial that remains is     x² -x -6   which can be factored as....

(x-3) (x + 2)

And the factorization is  (x-1) (x-3) (x +2) and the rational zeroes obtained by setting each factor to 0 are 1, 3 and -2

And that's it.....

(2/3)  / 5   =  ( 2/3 ) / (5/1)

Remember, that when we divide fractions, we "Keep"  "Change" "Flip"

"Keep" the first fraction   (2/3)

"Change" to multipliction

"Flip" the second fraction  = (1/5)

So...putting it all together, we have

(2/3) x (1/5)  =  (2/15)

Nice answer, ND........here's my slightly different approach......

Let the sum of the six numbers = S

So

S/6 = 6

And if 3 is subtracted from each of four numbers, we have...

(S -12) / 6 =

S/6 - 12/6 =

6 - 2   = 4

Let the cost be "C"

So ....

1.80C = 14      divide both sides by 1.80

C  =   14 / 1.80   ≈ $7.78

Subtract 56 from both sides

(v +3)^3 = -56    take the cubed root of both sides

v + 3  = (-56)^(1/3) = -(56)^(1/3)  = -(8*7)^(1/3) = -2(7)^(1/3)   subtract 3 from both sides

v =    -3 -2(7)^(1/3)=  -(3+ 2³√7)

15¹⁶ = 6,568,408,355,712,890,625

(over six quintillion !!!)

If we know the degree measure, we can use the following "formula"....

[degree measure / 360]   x   [2*pi*r] = s      (where s = arc length)

If you have taken Trig, you might be familiar with "radian" measure ("rads")

The "formula" for this is

s = rΘ     (where Θ is in "rads")

(320lbs/2000lbs) x $240  = $38.40

Those pics are BEAUTIFUL, rosala!!!

And the cat "grilling" the "bird"......I'm still laughing at that one!!!!!

All these are great...as usual......!!!

Divide what you have by 43,560.....that will give you your acreage.......