What is the exponent for (-1). I was doing an equation were I have to multiply exponents and variables and stuff so I just want to know

Find the area of the unshaded square

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?

Which statement best describes how to determine whether f(x) = x squared- x +8 is an even function ?