Use the method of completing the square to transform the quadratic equation into the equation form (x + p)2 = q.

-4 + 4x + x2 = 0
a) (x + 2)2 = 4
b) (x + 2)2 = -4
c) (x + 2)2 = 8
d) (x + 2)2 = -8

The floor plan of a room has a scale of 2.5 in.: 35 ft. in the drawing, the length of the room is 8 in. and the width of the room is 6 in. what is the perimeter of the actual room?

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)