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.
Add the soil mixtures so 2m3 plus 6m3 and add the percentage.
Answer:
Step-by-step explanation:
14
SA = 2 pi r * x + 2* pi r^2
r = 6
SA = 2 pi * 6 * x + 2 * pi * 6^2
SA = 12 pi * x + 72 pi
Volume = pi r^2 * x
Volume = pi 36 x
Now volume and surface area are made to be equal so
Volume = Surface area
36 pi x = 12 pi x + 72 pi Divide through by pi
36x = 12x + 72 Subtract 12x from both sides
24x = 72 Divide by 24
x = 72/24
x = 3
15 is done exactly the same way. You can try it yourself. Only the numbers are different. Use 10 for the radius. You should get x = 2.5
the answer to the inequality is..
Inequality Form: x < 6
Interval Notation: (-∞,6)
