Using exactly four eights, add arithmetical symbols between the eights to make each of the target numbers. You may use plus, minus, times, and divide symbols, as well as parentheses and brackets for grouping. 8 8 8 8 = 56 8 8 8 8 = 192 8 8 8 8 = 10

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

Tan198=asin164=? how to solve this? ?