Define x andy as symbolic variables and create the two symbolic expressions $$S = x + \sqrt { x } y ^ { 2 } + y ^ { 4 }$ and T = \sqrt {x} - y ^ { 2 }T= x−y 2 $Use symbolic operations to determine the simplest form of S \cdot⋅ T . Use the subs command to evaluate the numerical value of the result for x = 9 and
y = 2 .

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

There are 15 plates and each plate is either 7 or 12 inches diameter. which systems of equations do you use to find the number of 7 inch plates, x and 12 inch plates, y

Alice is paying her bill at a restaurant. but tax on the cost of a male is 5%. she decides to leave a tip 20% of the cost of the meal plus the tax