(ax + by)(cx – dy)
in the expression above, a, b, c, and d are non-zero
constants and ad = bc. if ac = 18 and bd = 50, what.
is the value of the coefficient of the xy term when
the expression is multiplied out and the like terms
are collected?

Problem number 26 of the rhind papyrus says: find a quantity such that when it is added to of itself the result is a 15. the modern day equation that models this problem is x + x = 15. what is the solution to the equation? x = 10 x = 12 x = 15 x = 30