Which expression is equivalent to this polynomial? 9x^2 + 4

A. (3x + 2i)(3x − 2i)
B. (3x + 2)(3x − 2)
C. (3x + 2i)^2
D. (3x + 2)^2

A. (3x + 2i)(3x − 2i)

I hope this helps.

The price of one share of a company’s stock declined $13.89 every day for 2.5 days what was the stocks total decline in price

For every touchdown scored by the timberwolves the mascot does three backflips if the cheerleaders set off six confetti cannons how many touchdowns did the timberwolves score if the cheerleader set of 18 confetti cannons

Random variables x poisson~ ( a) ,y poisson ~ ( a) . x and y are independent. if 2 1, 2 1. u =2x+ y-1, v=2x- y +1. find: ) cov (u ,v ).