Use Pascal's triangle to determine the second term of the expansion of (x+2)^3

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0