Write each expression in a + bi, where a and b are real numbers 1. 5i^2

2. i^2 x i^2

3. (-3i)^2

4. 7 x 4i

5. (5+4i) - (-3 +2i)

Sue's average score for three bowling games was 162. in the second game, sue scored 10 less than in the first game. in the third game, she scored 13 less than in the second game. what was her score in the first game?

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?

The value of cos 30° is the same as which of the following?