9514 1404 393
Answer:
(c) P(x) = x^4 +3x^3 -10x^2 -30x
Step-by-step explanation:
If the polynomial has integer coefficients, its complex or radical roots come in conjugate pairs. That is, -√10 is also a root. The four roots mean the polynomial has degree 4. That eliminates all but answer choice C.
Each root 'a' gives rise to a factor (x -a), so the factored polynomial is ...
P(x) = (x -0)(x -(-3))(x -√10)(x -(-√10))
P(x) = x(x +3)(x² -10) = x(x³ +3x² -10x -10)
P(x) = x^4 +3x^3 -10x^2 -10x
Answer:
50
Step-by-step explanation:
Answer:
t=1/2
Step-by-step explanation:
Answer:
As soon as the car travels south you would take 5 miles off the 8 south which would make it 3 miles but you would have to add an extra 6 as it also travelled west so the car would have to travel east to arrive at the initial starting point.
Step-by-step explanation:
X+2 =0
x= -2
subs x= -2 in the equation
(-2)^3 - k(-2)^2 +3(-2) +7k = 0
-8 - 4k - 6 +7k =0
3k = 14
k= 14/3
