Here is another free chance YAY

What is the product of the radical expression. (7-2square root) (8+2 square root)

Carson has only $20 bills and $10 bill in her wallet. the total value of the bills is $50. she has 1 more $20 bill than $10 bills. how many each kind of bill does carson have? a. one $20 and two $10 bills b. two $20 bills and one $10 bill c. one $20 bills and three $10 bills d. two $20 bills and two $10 bills

If the measure of xyz is 81 what is the measure of yz