Respuesta :
when the signs are different the answer is negative.
+ * - = -
- * + = -
+ / - = -
- / + = -
when the signs are the same the answer is positive
+ * + = +
- * - = +
+ / + = +
- / - = +
+ * - = -
- * + = -
+ / - = -
- / + = -
when the signs are the same the answer is positive
+ * + = +
- * - = +
+ / + = +
- / - = +
