Find the least common denominator (a^2/ a^2+4a+4) (-7/a^2+7a+10)

This is geometry. could anyone ? i can't fail this class. my grade is quite low already.

Module 10 coordinate proof using slope and distance answers is quadrilateral abcd a parallelogram? explain how you know.

20.ju inces. which ordered pair is a viable solution if x represents the number of books he orders and y represents the total weight of the books, in ounces? (-3,-18) (-0.5, -3) (0,0) (0.5, 3)