Roots: - √5 , √5, and - 3
=> these are factors of the polynomial: (x + √5), (x - √5), and (x + 3).
Multiply those three factors:
(x + √5) (x - √5) ( x + 3) = [x^2 - 5] ( x + 3 ) = x^2 + 3x^2 - 5x - 15
Therefore the polynomial x^2 + 3x^2 - 5x - 15 is a polynomial with the given roots.
Answer: option B. x^3 + 3x^2 - 5x - 15
0.59 increase because it went up
Use A = P (1 + r/n) ^(nt). Assuming that we're dealing with years here, n = 1, so we have
A = P (1 + r) ^(t), where r is the interest rate as a decimal fraction.
The investment decreases in value, so the common ratio r is (1.000-0.012), or 0.988.
Thus, A = $100,000* (0.988) ^25 = $73947.52 is the current value, after 25 years.