Answer:
Factor it.
x^2+12x+20=0
(x+2)(x+10)=0
x=-2,-10
Step-by-step explanation:
This will be a 4th degree polynomial. Our root of x = 7 in factorization form is (x-7). Our root of x = -11 in factorization form is (x+11) and the last one is a complex number. According to the conjugate root theorem, if we have 2+8i, we also HAVE to have 2-8i. In factorization form that first one is (x-(2+8i)) which simplifies to (x-2-8i). Its conjugate in factorization form is (x-2+8i). Now we will FOIL all that out. Let's start with the (x-2-8i)(x-2+8i). That multiplies out to
. We have to combine like terms here to shorten that a bit.
. i^2 is equal to -1, and -1(64) = -64. Now we have
. That is
. Now let's FOIL in another factorization.
. That comes out to
. One more term to go!
. That, finally, is
.
Answer:
B.) no association
Step-by-step explanation:
D-umb study
Answer:
3x²y²(1 - 4xy²z)
Step-by-step explanation:
________________________________________
Factor 3 out of 12
Factor x² out of x³
Factor y² out of y⁴
you will get the GCF of 3x²y² and left with (1 - 4xy²z)
3x²y²(1 - 4xy²z)
________________________________________
Hoped this helped
Step by Step Explanation:
The area a is defined as
Now take derivative of the above expression with respect to time:
Solving for dr/dt, we then get
Note that da/dt = 900 m^2/s and when the area of the oil slick is 1400 m^2, the radius r is r = √(1400/π) = 21.1 m. Therefore,the rate at which the radius is increasing dr/dt is