Factor over the complex numbers, if possible:

x^2+2xyi-y^2

Four teachers bought 10 origami books and 100 packs of oragami paper for their classrooms. They will share the cost of the items equally. How much should each teacher pay?

Denita has 4 coins. If Denita flips all the coins at once, how many outcomes are in the sample space?

What is the next term of the geometric sequence? 4/9,4/3,4 these are fractions by the way the last number is not a fraction its just a 4

Evaluate 4+8 dived by 2 (6-3)

Hannah does pushups in sets of 3. She did 10 sets of pushups today. Then her coach asked her to do 15 more pushups. How many pushups did Hannah do today?

Chip has 25 marbles and 16 of them are blue what percent of his marbles are blue

What is a numerical expression for the word phrase? The quotient of 21 and 55

In 1927, Charles Lendbergh had his first solo flight across the Atlantic Ocean. He flew 3,610 miles in 33.5 hours. If he flew about the same number of miles each hour, how many miles did he fly each hour?

What is the gcf of 8x and 40?

12.5 - 4g = - 2g - 3.5