[(5x)/(x^2+2x-8)]-[(x)/(x^2-16)] find the difference

To complete your spring schedule, you must add calculus and physics. at 9: 30, there are three calculus sections and two physics sections; while at 11: 30, there are two calculus sections and three physics sections. how many ways can you complete your schedule if your only open periods are 9: 30 and 11: 30?

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

Is a positive integer raised to a negative power always positive