Explain why the expression x^2 +(p+q)x + pq leads to the need to determine integers that add to b and have a product c when factoring a trinomial of the form x^2+bx+c.

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

Which of the following is the graph of y= square root -x-3

Your car's gasoline tank holds 18 gallons of gasoline. on a trip in canada, the tank is one-quarter full. you want to fill the tank. how many liters of gasoline are needed to fill the tank