To solve the inequality above, first we have to calculate
the roots of the equation x^2 - 5x + 6 = 0.
After finding
the roots of the equation, we could write the expression in a factored form
as:
1*(x-x1)(x-x2) =<
0
So, let's apply the quadratic formula to calculate the
roots:
x1 =
[5+sqrt(25-24)]/2
x1 =
(5+1)/2
x1 =
6/2
x1 =
3
x2 =
(5-1)/2
x2 =
4/2
x2 =
2
The inequality will be written
as:
(x - 3)(x - 2) =<
0
Now, we'll discuss the
inequality:
- the product is negative if one factor is
positive and the other is negative:
x -
3>=0
We'll add 3 both
sides:
x >
=3
and
x - 2 =<
0
x =< 2
The common
solution is the empty set.
Now, we'll consider the other
alternative:
x - 3 =<
0
x =<
3
and
x - 2 >=
0
x >= 2
So, x belongs
to the interval [2 , 3].
Finally, the
solution of the inequality is the inetrval identified above:
[2 , 3].
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