f(x) = x³ + 2x² + x
f(x) = x.(x² + 2x + 1)
f(x) = x.(x + 1)²
So, f(x) = 0 when x = 0 or when x = -1
But
f(x) = x.(x + 1)² = x.(x + 1).(x + 1)
So we have three roots, x = 0, x = -1 and x = -1, although two of them are equal.
So we have a multiple zero x = -1 with a multiplicity 2.
Alterativa A.
Answer:
Step-by-step explanation:
the 4 one
2x-6=0
2x-6+6=0+6
2x=6
2x/2=6/2
x = 3
Answer:
Perimeter of rectangle = 32
Step-by-step explanation:
32 = 2(L+B)
L+B=16
B=16-L
B=16–9
B=7
AREA = L*B
AREA = 63sq.cm
Answer:
AC = 28
Step-by-step explanation:
Ok, we know that:
Points A, B, and C are collinear.
Point B is between A and C.
We want to find the length AC (distance between A and C), if we know that:
AB = 16
BC = 12
Ok, knowing that B is between the other points, we know that:
AB + BC
defines the total length of the segment that connects the 3 points.
Thus, if we define this segment as a length, we only use the endpoints, A and C.
Then we have that:
AB + BC = AC
now we can solve this:
16 + 12 = AC
28 = AC
