Answer the questions.

Find the roots of the equation below. x^2 - 6 + 9 = 0

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?