Perform the indicated operation and write the answer in the form a + bi. 4 - 5
6 + 7i
11
13
58
13
58
11
85
+
85
58
+
i
13
13
11
58

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.