Solve the equation by completing the square. (step by step please)

4x(x + 6) = -40

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

Which of the following transformations will always produce a congruent figure?