Select the correct answer.
For which value of b can the expression x2 + bx + 18 be factored?

How to determine whether two known pairs of points are on the same line.

Question 10jur's car can travel 340 miles on 12 gallons. jack's car can travel 390 miles on16 gallons. which person has the best mileage (miles per gallon) and what istheir mileage?

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).