Answer:
1.716*10^-3
Step-by-step explanation:
(4.4*10^-6)*(3.9*10^2)=0.001716
To convert 0.001716, we need to move the decimal places three places to the right to make sure the number is between 1 and 10. Moving three places to the right makes the exponent negative.
9x^2+12x
I think the correct answer is c
If is a factor of the polynomial, it means that is a root of the polynomial.
In fact, if a polynomial has a root (i.e. ), then the polynomial is divisible by
In your case, you know that the polynomial is divisible by , so is a solution.
Let's evaluate and set it to zero:
We can check the answer: if the polynomial becomes
And we're claiming that is a root of this polynomial: